What Are Drill Bits?
Drill bits are the tips put at the chuck of the drill. These bits are detachable and replicable with other bits. Drill bits are used to make holes or drive fasteners into materials. The cutting drill bits remove materials and make holes of various types. They come in various shapes and sizes according to the material they will be used for and the kind of hole they will be used to create.
The Parts of a Drill Bit
Even though small drill bits are a marvel of human innovation and engineering. Each part of a drill bit serves a function;
The shank is the tail end of the cylindrical shaft of the bit that is grasped in the drill chuck. Different kinds of shanks (round, hex & SDS) and chuck combinations can deliver greater accuracy while moving the bit to greater accuracy.
The neck is the middle part of the bits body that connect the shank with the body of the bit. The diameter of the neck is less than the shank.
The flutes are the planes on the twisted portion of the drill bit. After the cutting edge of the bit has made a hole the flutes enlarge them. Flutes are essential on a bit as it curls the chip tightly. Reversing the direction of turn makes it easy to remove them too. The planes of the flutes also allow the lubricants or coolants to flow down easily.
The body is the length between the neck to the cutting tip of the bit. It comprises of the chisel edges, web, body clearance, flutes, etc. They are also coated with bronze oxide, black oxide, titanium nitride, cobalt, etc.
The cutting edge is the most important part of the bit. It cuts through the work surface and requires to be sharp to breach through the material. There are various types of cutting edges based on the material and shape of the cutting edge. For metals, a steel tip is used while for glass, a diamond tip.
The body clearance is the distance between the cutting edge and the next flute. This part of the bit lessens the friction and dissipates the heat due to friction.(we have also written a comprehesive guide about the finish and brad nailers ).
The land is the higher part of a flute.
The chisel edge or the dead centre is the part of the drill bit that is designed to cut or carve through the hard surface. This is the point of contact where the mechanical energy from the drill bit is transferred to the material and a strike or cut is made.
The chisel edge angle is the wider part of the chisel closer to the outer edge of the drill bit. These angles are different for different materials.
The clearance diameter refers to the width of the body clearance. The reduced body diameter decreases the friction between the drill bit and hole being drilled.
The margin represents the full diameter of the bit. It is the narrow strip that extends along the length of the flutes.
The round taper is a kind of shank divided into two parts. The round part is called the taper shank. It has a gradually decreasing diameter along the shank end. The tail end is the narrowest.
The tang is the flat and split part of the shank. The taper and tang shank fits into a special drill bit holder.
The taper length is the total length of the tang and the taper shank, tip to tip. This length differs in different types of drills.
The axis goes through the centre of the drill bit. It is its longest length through the centre.
The heel is the outer edge of the cutting edge or the chisel.
The lip length is the radius from the centre to the edge.
The lip angle is the angle between the outer edge and the chiselled edge.
The drill diameter is the distance from margin to the other on the opposite side.
These are the basic parts of the drill bit but the more complex the bit the more the parts.
Types of Drill Bits and Their Purpose
The materials they are used on are also mentioned.
Twisted bits are the most common types with spiral flutes. They are used on light metals, wood and plastic.
Brad-point bits have a brad at the centre of the tip. This helps position the tip precisely. It allows for a clean entry and exit while boring into the wood.(we have written a guide for choosing the best dual fuel generators)
Auger bits can be hollow or solid. These wood-boring bits have a screw tip that starts a hole and pulls it through the material creating a quick and clean hole. The large flutes remove more material.
Installer bits are hollow and help in installing wires for security and entertainment systems. The bit drills through the wood making a passage for the wire.
Self-feed bits bore through wood. There is a screw at the tip that helps the position of the bit that bores into the wood. It does not have any flutes thus it has to be withdrawn periodically to clear the dust and chips.
Spade bits bore larger holes in wood. The hole diameter can be up to 1.5 inches. The sharp point helps position the bit while the flattened blade chisels the wood.
Forstner bits cut smooth clean holes in the wood with flat bottoms to receive dowels. They are used on drill presses.
Hole saws cut large holes or remove plugs from the material. It is usually attached to a mandrel or arbor with a shank. A bi-metal hole saw can may have a carbide or diamond edge to cut through heavier materials such as ceramics, tiles, masonry.
Countersink bits or screw pilot bits are used on wood. They make countersink, counterbore and drill pilot holes in the material. Counterbores enlarge holes previously made. They are used for spot-facing and counterboring. There are 6 types of counterbores – aircraft 1/4 shank, cap screw, a pilot, solid, straight shank and taper shank.
The plug cutters bore holes into wood to create plugs for concealed recessed fasteners.
The step bits are used to drill in 1/4-inch material. The stepped design lets you use the same bit to deburr and drill holes of various sizes.
The glass and tile bits have a carbide tip.
Masonry bits help drill through brick, concrete, etc.
Based on the finishes and materials there are 5 types of bits.
- High-Speed Steel (HSS) bits used on fibreglass, soft metals, PVC, etc.
- Cobalt bits are very hard and dissipate heat well thus used on tough materials.
- Black oxide coated HSS bits are corrosion resistant and use of a variety of materials.
- The titanium-coated HSS bits are tough, stay sharp longer and produce less friction.
- Carbide tipped bits remain sharp longer than all the above and are used on masonry and tiles.
Features on Drill Bits
The features to look for on the drill bits are:
Drill style such as auger bits, twisted bits, etc can be decided depending upon the material you use them on.
Shank options such as straight, taper, SDS etc are used on different types of drills. Find out your type then pick the bits.
Bit lengths such as a stub, taper, jobber, etc are available. Shorter the bit the higher the rigidity truer the holes.
Drill point angles affect the performance of the tool by offering better cutting angle. The more aggressive the angle the more the torque. They range from 118°, 125°, 130°, 134°, 135°, 140° and 150°bits.
The number of flutes gives the sum of cutting edges that impact the material. There are zero-fluted, 2-fluted, 3-fluted and 4-fluted bits. Materials and coats lend longevity and strength to the bits as described above.
|Top 15 Best Drill Bits in 2019|
|1. Drill Hog 29 Piece Cobalt Drill Bit Set|
|2. Irwin Tools 3018002|
|3. Chicago-Latrobe 57714|
|4. Drill Hog 21M42GB|
|5. Norseman Drill Bits 44170|
|6. Enertwist 246-Piece Drill Bit Set|
|7. Drill America DWD29J-CO-PC|
|8. Ryobi A98901G|
|9. VonHaus 246-Piece Drill Bit Set|
|10. Tacklife DNS01 50 Piece Drill Bit Set|
|11. Makita B-49373|
|12. Volterin 50-piece Twist Drill Bits Set|
|13. BLACK+DECKER 71-973|
|14. Makita D-59178|
|15. Drill Hog CO - M42|
Drill Hog manufacture and distribute professional cutting tools. Their products include farm equipment, repair instruments and tools for automotive, aviation, truck and farm equipment.
Design and Build
The Drill Hog 29 Piece Cobalt Drill Bit Set is made of premium High-Speed Steel (HSS) that contains high amounts of Molybdenum thus the term M42 HSS is used. They range from 1/16th of an inch to 1/2 an inch. The drill bits thicken in the increment of 1/64th of an inch. There are 29 of them thus the maker does not skip any sizes. The cutting angle is 135° which prevents “walking”. The “tri-flat” shank prevents “spinning” in the chuck.
The Drill Hog 29 Piece Cobalt Drill Bit Set is ideal for people into home repairs, woodwork, metalworks, furniture works, etc. When you work with a bit in the chuck it experiences high amounts of torsion, friction and grinding. This blunts the bit edges. The high molybdenum HSS steel is heat resistant up to 4753°F and harder thus does not wear off easily. This versatile kit has 29 bits of various bit sizes, thus, there is no hole size you cannot drill. The 135° delivers amazing cutting performance and cancel out walking. The tri-flat shank fits into the chuck offering excellent traction. The 29 bits are organised in a bracket that fits into a neat box making them easy to access and organize.
The Drill Hog 29 Piece Cobalt Drill Bit Set comes with 29 bits ranging from 1/16 – 1/2 of an inch in the increments of 1/64th of an inch. The cutting edge is 135° with the hardness between 68 – 70 HRC on the Rockwell Hardness Scale.
Drill Hog 29 Piece Cobalt Drill Bit Set comes with a lifetime warranty.
Why Is It the Best of The Lot?
The Drill Hog 29 Piece Cobalt Drill Bit Set offers a broad range of bit sizes. They are strong against torsion thus work well on hard materials. They are heat resistant combined with a cutting angle is 135° they bite into the material making short work of it. The tri-flat shank wedges into the chuck well and offers good traction.
Irwin tools are the manufacturer and distributor of power and hand tools. They also make their accessories to facilitate traders from around the world. The company was founded in 1885 and more than a century later are still going strong.
Design and Build
The Irwin Tools 3018002 is a 29-piece cobalt M35 drill bit set. It is made of Cobalt M35 this means the bits are made of 5% cobalt inclusion in the High-Speed Steel (HSS). This lends abrasive resistance to the bits when used on tough metals. The cobalt steel gives the cutting edge a sharpness that can be maintained by re-sharpening. The 135°-point tip starts cutting on contact and requires less force. There is rubber over mould in the case that protects the kit if dropped. There is a tap and drill selection chart for reference. The automatic indexing helps easy identification and access. The cartridges are removable and easy to carry wherever you need them. The size ranges from 1/16th of an inch to 1/2 an inch in the increments of 1/64th of an inch.
The Irwin Tools 3018002 bits are made of M35 super high-speed premium cobalt the chemical and physical composition is such that it lends superior hardness that is resistant to wear and heat due to friction. The heat-treated hardness ranges between 68 – 70 HRC. The 29 sizes of bits let you make a broad range of holes. The cutting angle is 135° that reduces walking and high heat and high abrasion resistant.
The Irwin Tools 3018002 comes with 29 bits in 12 inches by 7.5 inches by 4 inches box that weighs 4.5 pounds. The 29 bits range from 1/16th of an inch to 1/2th of an inch in the increment of 1/64th of an inch. The bits are made of 5% cobalt in High-Speed Steel bits with a cutting edge at 135°.
The Irwin Tools 3018002 comes with a lifetime warranty.
- A broad range of bits
- Eliminates walking
- Toughened 5% cobalt HSS bits
- Could not drill mild steel
Greenfield Industries Inc are the suppliers of expendable cutting and related tools. Chicago-Latrobe is one of their brands that cover a variety of tools used in commercial, construction, maintenance, industrial and other applications.
Design and Build
Chicago-Latrobe 57714 is 118° High-Speed Steel bit set of the Jobber length. These 150 series jobber length drill bits have 29 bits. They range from 1/16th of an inch to 1/2 an inch in an increment of 1/64th of an inch. They come with a black oxide finish that enhances the hardness and reduces the wear. The smooth flutes bite into the materials to chip it away and allow the flow of the coolant. The 118° tips are for general purpose applications that work on ferrous material too.
Chicago-Latrobe 57714 comes with a versatile mid-range drilling depth for general purpose projects. The round shank fits into most drill chucks. The helically twisted flutes cut out chips and the cutting edge lets the coolant slide along to reach the cutting edge. The bits are made of High-Speed Steel with heat and wear resistance. The black oxide finish lends wear resistance and hardness to these bits. The finish also lubricates the bit and its flutes allow the flow of the coolant along the cutting edge. This disperses heat and smoothens the path of the bit into the material.
Chicago-Latrobe 57714 set comes in a case that is 7.25 inches high by 4.375 inches wide by 1.875 inches deep. It weighs 2.95 pounds. The set ranges from 1/16 – 1/2 of an inch the size increment is 1/64th of an inch. The jobber’s bit has a cutting edge of 118°.
The Chicago-Latrobe 57714 set comes in an epoxy-coated steel case that has an index and labelled compartments that allow the identification of the bits.
- Conventional cutting edge at 118°
- A wide range of bits
- Black oxide coating enhances hardness
- Smooth flutes for coolant flow
- Round shank fits all drills
- A case for organizing the bits
- Chipped and broke at first use
Drill Hog is an American company that makes farm, automobile, metal works, fabrication, woodwork, construction and machining tools. They distribute their products online and from physical stores.
Design and Build
The Drill Hog 21M42GB is a 21-piece bit set. The bits are made of M42 steel. The M42 is cobalt molybdenum steel used to make tools and High-Speed Steel bits. They contain 8% cobalt that lends hardness between 68 – 70 HRC. Tools made of this steel offer balance, hardness and toughness to the tools. It has a 135° split point that prevents walking. The tri-flat shank is flat on three sides that prevent spinning in the chuck. The bits come in the range of 1/16th of an inch to 1/2 of an inch in the increment of 1/32th of an inch.
Drill Hog 21M42GB bits are made of cobalt steel with a melting point of 2723°F. There are a great amount torque and heat produced while drilling through the material. The hard bit is not only corrosion resistant but heat resistant. This prolongs the life of the bits. The HSS bits have a cutting edge of 135° that prevents walking and bites through stainless steel, truck frames, farm implements, grade 8 bolts, etc.
The Drill Hog 21M42GB is known as the “Mechanical Set” as it contains the most popular sizes. The M42 solid HSS bits have a cutting edge of 135° and range from 1/16th – 1/2 of an inch in an increment of 1/32rd of an inch. The tri-flat shank is flat on three sides that fit into most chucks. The box weighs one pound and is 6.4 inches in length, 3.9 inches in breadth and 1.2 inches in height.
The Drill Hog 21M42GB comes in an epoxy covered steel case with pop-up tiers. The unit comes with a lifetime warranty.
- 21 bits between 1/16 – 1/2th of an inch
- M42 HSS bits
- Wear & heat resistant
- Unevenly imprecisely made bits
Norseman has been making the finest high-speed tools since 1951. They deliver value, service and consistency. They begin by using the finest steel and craft them for long-lasting durability.
Design and Build
The Norseman Drill Bits 44170 has 29 Ultradex black pieces. These drill bits are made of High-Speed Steel (HSS). These are heavy-duty NAS 907B heavy Jobber drill bits. They are made of tool steel with a high molybdenum content. The bits have a gold oxide finish for high lubricity. The shank is round and smooth. There are precision ground points, neat flutes, sufficient body clearance and drill diameter that help make a clean and precise cut. The tip of the drill bit has a split point cutting edge of 135°.
The Norseman Drill Bits 44170 are jobber drill bits thus they have longer flutes. The jobber bits are used on softer materials like composite, wood and soft metals. As these bits are made of HSS with high Molybdenum content and gold oxide finish they come with higher lubricity. As they have a smooth round shank the bit fits into most drill chucks. The bits have a precisely centred tip and the flutes twist around the precise axis. Thus, the pressure is applied precisely to make a clean hole.
The Norseman Drill Bits 44170 are Type 190-AG NAS 907B 135° Split-Point Black and Gold magnum super premium bits. The kit weighs 2.82 pounds and is 6.5 inches in length, 3.2 inches in breadth and 3.2 inches height. The 29 Ultradex pieces range from 1/16th of an inch to 1/2th of an inch in the increment of 1/64th of an inch.
The Norseman Drill Bits 44170 come in a cylindrical box and have a lifetime warranty.
- 29 Black Ultradex pieces
- Bits made of HSS
- Gold oxide finish for high lubricity
- 135° split point tip
- Not as durable as Ti or Co bits
The brand Enertwist is owned by Changzhou Fangjia Electrical Appliance Co. Limited. They make hand operated implements, hand tools, cutlery, razors, side arms, etc.
Design and Build
The Enertwist Drill Bit Set consists of 246 drill bits of various types. They are made from High-Speed Steel and covered with a durable Titanium coating that lasts a long time. The drill bits come in an injection mould box inlaid with a cushion. The mould and cushion hold the bits in place in the upper and lower halves of the box.
The Enertwist 246-Piece Drill Bit Set comes in a moulded plastic box. This black and orange case has a neat layout where the placeholders keep the bits in place in both the halves of the box. This avoids the pieces falling and getting mixed up. Also, as these bits are arranged by size – you know exactly what size you need at a glance. This kit is excellent for household and DIY projects, repair and maintenance. The great variety of drill bits give you the versatility to work with many materials such as wood, metal, masonry, concrete, etc. Due to the various kinds of shafts, they can be used with various fastening and driving applications.
The Enertwist 246-Piece Drill Bit Set comes with a chart describing the various sizes of the bits in inches. There are 57 titanium drill bits, 30 black oxide bits, 17 wood drill bits, 4 spade bits and one spade bit extension. There are 21 masonry bits, 4 drill stoppers, 66 screwdriver bits of 1 inch and 30 screwdriver bits of 2 inches. There are 6 nut drivers and 2 Hex keys and one countersink. There are 4-hole saws, 1 arbor adapter for hole saws, one cupped nail punch and one-bit holder. The box is 16 inches by 11 inches by 6 inches in length, breadth and height.
The Enertwist 246-Piece Drill Bit Set comes with a one-year warranty.
- A wide range of bits
- HSS bits
- Masonry bit disintegrated
Since 1927 drill America have been supplying industries and contractors with cutting tools. They distribute the tools and technical expertise to their customers to do their jobs well.
Design and Build
The Drill America DWD29J-CO-PC is a set of 29 drill bits made of cobalt. These bits are made of M35 cobalt steel. The 135° jobber length split point drill bits conform to the National Aerospace Standard (NAS) 907. These bits have a high red hardness that allows 30% greater speeds compared to the conventional M2 HSS. The cobalt bits are covered with gold and have two flutes with the right-hand cutting direction.
The Drill America DWD29J-CO-PC comes with 29 pieces ranging from 1/16th of an inch to 1/2 inch in the increments of 1/64th of an inch. The kit comes with a handle to hang on your belt for handsfree operation of the drill. The high red hardness drill bits can spin 30% faster without wear and the gold oxide coating lends lubricity. The M35 steel has a higher tensile strength and the 135° split point is self-centring to reduce thrust. The bits are shatterproof, rust and water-resistant. The cylindrical case is easy to handle with the circular index that lends aesthetics to the kit. The ergonomic design lets to carry it anywhere.
The Drill America DWD29J-CO-PC jobber bits with a round shaft are made of M35 cobalt and coated with gold oxide. The split-point cutting angle is 135°. The has two flutes turning to the right-hand side. The 29 bits come in the range of 1/16th of an inch to 1/2th of an inch in the increments of 1/64th of an inch.
The Drill America DWD29J-CO-PC come in a plastic case with 29 drill bits from 1/16th of an inch to 1/2th of an inch in the size increment of 1/64th of an inch. The kit is backed by a lifetime warranty.
- Set of 29 M35 cobalt bits
- A neat case with a circular index
- The bits wobble making misshapen holes
Ryobi is a Techtronic Industries brand besides AEG, Milwaukee, Homelite, Hoover US, Vax, Dirt Devil, etc. This Japanese brand manufactures an automobile, telecommunications and electronics components. They also sell power tools, printing equipment and builder hardware.
Design and Build
Ryobi A98901G is a drilling driving accessory kit of 90 pieces. The bits have a straight shank made of S2 Professional Grade steel. These insert bits are titanium coated the split-point 135° cutting edge drills on contact and prevents walking.
Ryobi A98901G is a 90-piece bit set that is essential in any home where there is the use of wood, metal, concrete, masonry, etc. The black oxide coat on the bits makes them harder to bite through any surface. The masonry bits make holes through metal, brick, and stone. The wood-boring bits function like Forstner bits. The set includes bits that help you install locks in your doors. There are an Allen wrench and standard fastener bits with drivers that act as replacements on drills. Buying bits in bulk adds value to your kit as you find a tool for every need.
Ryobi A98901G has 21 pieces of black oxide drill bits. There are 6 pieces of masonry bits and 4 pieces of hole saws bits. There are 27 fastener bits that drive fasteners and a magnetic bit holder. All these 90 bits are stored in a plastic storage box with compartments and labels that help the bits organized. The box weighs 3.8 pounds and is 12 inches by 10.5 inches by 2.5 inches in length, breadth and height.
The Ryobi A98901G comes in a plastic box with a transparent top. The 90 bits are arranged and labelled in an easy to read and reach maker. The plastic moulded tray keeps the bits fixed in place. The unit comes with a lifetime warranty.
- All types of bits in one kit
- Magnetic bit holder
- The 1/8 black oxide bit lasted 5 uses
VonHaus is a well-known brand of cleaning tools, such as vacuum cleaners and floor care products. They make other categories of tools too such as this bit kit. It makes it easy to tackle wood, metals and masonry work with ease.
Design and Build
The VonHaus Drill Bit Set has 246 drive and drill bits. They are designed to deliver the maximum cutting edge and speeds. There are 30 black oxide twist bits, 65 screwdriver bits and 64 titanium twist drill bits. They are of various types such as twisted drill bits, screwdriver bits, slotted, Pozi, metric Hex, square, nut drivers, etc. There are HSS titanium twist drill bits, hole saws, arbor adaptor, wood drill bits, cupped nail punches, masonry drill bits and a bit holder. The bits are made of HSS that transfers heat due to friction in an efficient manner. The bits are longer lasting and durable. The included specialist accessories such as countersink, hole saws, wood flat drill bits make this kit versatile.
The VonHaus Drill Bit Set is a comprehensive set of 246-bit pieces. The set comprises of bits useful in plastic, wood, masonry and metal drilling. There are many fastenings and screwdriver applications as well. These bits are compatible with VonHaus drills and other popular models. The set comes in handy for household projects. DIY projects and other repair work. Each set is colour-coded for easy identification.
The VonHaus Drill Bit Set comes with 87 HSS twisted drill bits, 22 wood bits, 21 masonry drill bits and 4 drill stop. There are 66 one-inch bits, 30 two-inch bits, 6 nut drivers and 2 hex keys. Besides 1 countersink, 4-hole saws, 1 arbor adaptor, 1 nail punch and 1-bit holder.
The VonHaus Drill Bit Set comes in a convenient box and a lifetime warranty.
- Carries a full complement of bits
- Versatile for use on wood, masonry, metal and plastic
- Comes with other drill accessories like arbor adaptor
- Low-quality material
- Bits snapped into two
Tacklife believes they are the future of tools. They manufacture the best tools – by design and material. Their products are not only well-made but also portable and sold at a revolutionary price.
Design and Build
TackLife 50 Piece Drill Bit Set has bits made of High-Speed Steel coated in titanium. The unique pilot point starts on contact this eliminates walking. The cutting edge is a split-point 135° that quickens drilling. The drill bit has a U-flute and a hardened end. The strong magnetic bit holder and nut driver hold the bits tightly. The case holds all the pieces in order.
Tacklife DNS01 is a professional drill and drive bit set with wood and metal nut drivers. The bits work with all kinds of drills such as impact drills, bench drills and electric drills. The screwdriver bits are made of HSS that improves torsion while reducing wear by 10 times increasing bit life. The precision fit tip prevents stripping and cam-out. The HHS bits are coated with titanium for durability. The S2 technology not only toughens the bits but also increases their lifespan by 10 times of ordinary bits. The universal 1/4th-inch hex shanks fit the chuck of any drill. The magnetic holder and nut drivers hold the bits and screws well preventing slippage. The case is durable and has a tilt-in and tilt-out design that allows easy access to the bits. The bits have coloured sleeves that not only code the bits for various uses but also makes them visible against the ground, work surface or in the box. Tilt-in and tilt-out mechanism for easy access.
Tacklife DNS01 comes with 20 twisted titanium drill bits, 24 torsion screwdrivers, 5 nut screwdrivers and a magnetic extension holder.
The TackLife 50 Piece Drill Bit Set come with a lifetime warranty.
- Drill and screwdriver drill bits
- Strong magnetic bit holder
- Bits made of HSS
- Coated with titanium
- Patented case
- Well-labelled pieces
- Not suitable for heavy duty work
11. Makita B-49373
Makita is a Japanese manufacturer of power tools. The company was founded in 1915 and operates offices and factories in all the China, Japan, Romania, UK, Germany, North and South America.
Design and Build
The Makita B-49373 is a set of 75 pieces that drill masonry, wood, metal and other materials. There are power bits meant for fastening applications. The set includes Phillips, Slotted insert, Pozidriv, Torx and Hex power bits. There is titanium nitride coated HSS tin bits of these the wood and metal bits range between 1-8 mm. There are brad point drills for wood that range from 4-8 mm.
The Makita B-49373 is a versatile and convenient multi-bit set with bits for fastening and drilling into diverse materials. The bits improve productivity as they are versatile in function. They can be used on wood, metal, masonry as fastening and drilling bits. There are Pozidriv, Phillips, Torx, Hex Slotted insert bits, HSS – tin drill bits and power bits. There is hex countersink, and centre punch besides a magnetic holder.
The Makita B-49373 box set includes 5 Phillips, 5 Pozidriv, 5 Torn and 5 slotted insert bits. There are 3 Phillips, 3 Polidori, 4 Torn, 2 slotted, and 4 Hex power bits. There are 19 Titanium nitride-coated HSS-TIN bits in the range of 1-8mm that work on metal and wood. The box includes 4 brad point wood drill bits between 4 – 8mm. There are 5 masonry hammer drill bits of length 4 – 8mm. The straight shank drill bits are for corded and cordless 1/2- and 3/8-inch drills. The centre punch drills a hole starting in metal besides there is a 1/4-inch hex countersink, eight 1/4-inch hex nut drivers ranging from 5 – 11mm and there is a 1/4-inch hex magnetic holder.
The Makita B-49373 box set comes with a lifetime warranty.
- Can be used on a variety of materials
- Variety of drill tips for various types of jobs
- Includes power bits for fastening applications
- Titanium nitride-coated HSS
- Brad point drill bits
- Includes countersinks and nut drivers
- Drill bits broke
Volterin brings you the right tool for all jobs. They sell drill bits made from superior titanium coated steel for reduced friction. The various types and sizes of drill bits drill quickly and less friction. The bits are suitable to use on a wide variety of materials.
Design and Build
Volterin Twist Drill Bit Set consists of 50 pieces of split point bits. The set includes 10 pieces each of the five most popular bits of small diameter with 118° split point centres. These Titanium coated drill bits last 6 times longer than the standard bits. The HSS and Ti coating lend improved durability to handle repetitive tasks. They are meant for low-speed power drills or PinVise drills.
The Volterin 50-piece Twist Drill Bits Set is meant for woodworkers, metal drillers and similar professionals. These bits help you drill holes into plastics, metals, ceramics, woods, etc. These bits are made of High-Speed Steel coated with Titanium nitrite meant for general purpose application on ferrous and nonferrous materials. This 50-piece set includes 10 pieces of the 5 most popular bits in the range of 1 – 3 mm. They have a cutting edge at 118° with a split point. The structure and composition of the bits are such that it reduces corrosion and friction. This causes the bits to last six times longer than the standard bits.
Volterin Twist Drill Bit Set has 10 pieces of 1.0mm, 10 pieces of 1.5mm, 10 pieces of 2.0mm, 10 pieces of 2.5mm and 10 pieces of 3.0mm drill bits. The bits are made of HSS 4241 and is coated with Titanium nitrite that lends durability by 6 times during repetitive tasks.
The Volterin 50-piece Twist Drill Bits Set with a lifetime warranty.
- Made of HSS coated with TiN
- 10 pieces of 5 types of bits
- Rockwell hardness level 60 – 62 HRC
- Ideal for masonry, wood, plastic, etc
- Size ranging from 1-3mm
- Reinforced core
- 118° split point
- QC & delivery issues
This Quick Connect drilling and driving system comes from this innovative tool and equipment company. This American manufacturer brings its users advanced technology and materials through their products. Black + Decker merged with Stanley Works to become Stanley Black and Decker in 2010.
Design and Build
BLACK+DECKER 71-973 comes with the most common screwdriver and drill bits. These bits tackle every job and work on every material and is compatible with 3/8 inch and 1/2-inch drills. The quick connect holder can be fitted with hex shank drill and screw driving bits. There are 8 screw driving bits and 21 drill and driving bits. All these bits are stored in a black zip-up bag that makes it easy to find them for use and store them.
BLACK+DECKER 71-973 are a mix of twist and masonry bits, hex shank spade, screwdriver bits and magnetic drive guide. There is a Quick Connect holder that works with 3/8- and 1/2-inch chucks. This assortment has all kinds of bits you may require for your projects. The bits work on wood, metal, plastic and masonry. They come in a black zipper pouch for storage and easy access to the bits when you require them.
BLACK+DECKER 71-973 come with an adapter compatible with 3/8th of an inch and 1/2 an inch corded and cordless drills. There are 30 pieces of which there are 5 spade bits, 15 twisted bits, 8 screwdriver bits, counterstrike and an adapter unit. The unit measures 11.8 inches by 14.1 inches by 1.6 inches in length, breadth and height.
BLACK+DECKER 71-973 30-piece bit set comes with a lifetime warranty.
- Compatible with 3/8- and 1/2-inch drills
- 8 screw driving tips
- 21 driving and drilling tips
- Comes with a magnetic drive guide
- Made of HSS
- Versatile set with many functions
- Can be used on masonry, ceramics, wood, etc
- The bit snapped while spinning in the drill
14. Makita D-59178
Makita was founded in 1915 as an electric motor repair and sales business. They were the first to manufacture and sell planers then they expanded into power tools. Starting from humble beginnings, today Makita has a presence around the world in various countries such as UK, USA, Europe, Germany, Canada, etc.
Design and Build
Makita D-59178 has 18 bits that work on masonry, wood, metal, plastic, etc. These bits are made of HSS-G that have a long life. These drill bits have a split point cutting edge of 135° that starts drilling fast and reduces walking. The brad point bits make straight and clean holes in the wood. Masonry hammer bits are used with hammer drills. The straight shank is compatible with 3/8 inch and 1/2-inch drills. The bits are fitted into a metal case for easy carrying.
The Makita D-59178 eighteen-bit set is versatile that drills through wood, metal, plastic, masonry, etc. The bits will fit a 3/8 and 1/2 inch cordless and corded drill. As the bits are made precisely and of HSS material they increase your productivity. They help make clean holes in masonry, wood, metal, etc. These bits are fitted in a carrying case for easy transport.These cutting tools remove material using the cutting edge and the flute to create holes. The bits are always circular in cross-section due to the precise axis and cutting edges. The shank end of the bit is grasped in the chuck while the cutting-edge drills.
The Makita D-59178 comes in a box 6.1 inches by 4.3 inches by 1.4 inches in length, breadth and thickness. The set weighs 1.37 pounds. There are 18 assorted pieces of drill bits. These HSS-G drill bits have a cutting edge at 135°. There are six HSS 1/8 – 3/8-inch bits, six wood bits ranging from 1/8 – 3/8 of an inch and six HMCT bits ranging from 1/8 inch to 3/8 inch. Fits into 1/8 inch and 3/8-inch drill. The hammer bits work on hammer drills.
The Makita D-59178 comes with 18 drill bits with a lifetime warranty.
- Bits to drill through masonry, wood, metal, etc
- Drill bits made of HSS-G steel
- Brad points make clean cuts
- Convenient carry box with handle
- Masonry hammer bits for hammer drills
- Cutting angle 135°
- Should include bits smaller than 1/8 inch
Drill Hog make state of the art cutting tools that assist you in all your projects. They make tools to work on automobiles, aviation, machining, woodwork and construction. Their tools are long-lasting and durable this makes Drill Hog a dependable brand. Their tools will remain with you for years.
Design and Build
Drill Hog CO – M42 are made of bits made of higher molybdenum content and cobalt. Drill bits experience great torsion thus they are made of hardened steel that not only absorbs the torsional forces but also the heat due to friction. Cobalt drill bits have 5-8% cobalt in them. They are used to make M42 and M35 steel that endure high temperatures. The cutting edge is 135° to immediately bit into the material and prevent walking. The round shaft allows these bits to be used in all drills.
Drill Hog CO – M42 are meant for making holes in wood, masonry, ceramics, plastics, metal, etc. The increased hot hardness lets the bits function 30% faster as compared to the HSS drills. The 135° split point helps penetrate faster and accurately without walking. HSS bits are made from tool steel that is much harder than the high carbon steel. These bits are used on hardwood and other materials that require higher speeds. The high-speed requirements cause the bits to heat up thus Cobalt and Molybdenum are added to the alloy that makes these bits heat and wear-resistant.
Drill Hog CO – M42 has 13 drill bit pieces that range from 1/16th of an inch to 1/4th of an inch with the size increment of 1/64th of an inch. The split point is 135°. The set comes in a steel box that weighs 1.81 pounds. The dimensions are 5.6 inches by 5.6 inches by 0.6 inches in length, breadth and thickness.
Drill Hog CO – M42 13-bit set comes with a lifetime warranty.
- High torsion
- Ideal for hard materials
- Heat resistant
- Wear resistant
- Withstands continuous use
- A wide range of sizes
- They bend and break easily