The 9 Best 21 mm Wood Drill Bits (2023 reviews)

The meichoon 21 mm wood drill bit is capable of outshining several other bit featured in this list in overall features. Even if you want a back up set these are definitely a good set to have. They drill an almost-flat hole, don't care if the hole intersects the edge, and drill incredibly smoothly. It has two spurs much like a spade bit. The holes are reasonably precise, although that is some tear-out. It makes a perfectly flat recess surface for the bolts/washers to grab onto.

The cuts are precise, flat bottom with clean sides. It is used to cut holes in other hardwoods (walnut) as well. It comes with care and patience, these bits will make sharp clean cuts for you.

Why We Like This:

You can keep the individual containers or combine them
Decent quality, smooth cuts in rock maple and bubinga, not exactly in a "case
Works good on the drill press

Best For The money: Rocaris 21 mm Wood Drill Bit

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate bit. The rocaris 21 mm wood drill bit is exactly that - it's a simple bit that hits all the right notes. A lot of these bits are very rough and they look like cast iron instead. They're very well made, they come individually packaged, each in it's own plastic bag within their own individual plastic box. It is suitable for pistol drill, bench drill, vertical drilling machine hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine, etc. More smooth, less noise.

These are very heavy duty, the initial bore is a little rough but when it goes it goes. The shafts are bent just enough that when drilling a hole the hole is oblong instead. This is a great product and good value for the amount of bits you get. They're very well made, they come individually packaged, each in its own plastic bag within their own individual plastic box. It is suitable for pistol drill, bench drill, vertical drilling machine hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine, etc.more smooth, less noise.

Why We Like This:

Handy to use and makes a very smooth hole
Bits are good quality and cut cleanly
Comes individually wrapped in oil sheet and plastic container

Best For pistol Drill: Hureson 21 mm Wood Drill Bit

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Hureson makes beautiful and great bit with classic and smartly choosen materials. It works well for cast iron brake rotors. It is suitable for pistol drill, bench drill, vertical drilling machine hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine, etc. The cylindrical cutter around the perimeter shears the wood fibers at the edge of the bore, and also helps guide the bit into the material more precisely.

The set screw hole position in these upgrade rotors is inverted. It includes a center point which guides it throughout the cut and incidentally spoils the otherwise flat bottom of the hole. It is made from high quality carbide tungsten steel and is hot-treated, sharp edge, high hardness, accurate positioning, high precision, smooth cutting, impact resistance, high toughness. They work amazing and have no trouble going through hardwoods and leave a very clean hole.

The ends of each bit is round to be used in an adjustable drill chuck. It is suitable for pistol drill, bench drill, vertical drilling machine hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine, etc.more smooth, less noise.

Why We Like This:

Flat bit design, 16pcs per kit, ranges from
Useful tool for wood work lovers to do diy
New and hot release

Best For hinge: Ldexin 21 mm Wood Drill Bit

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The ldexin 21 mm wood drill bit should be able to handle its purpose and duties with ease. High-speed steel woodworking hole with open hole neat, smooth, no tremor can sharp cutting edge improves opening speed, easy chip removal also for longer life. It is specially designed to through the hole cleanly in end grain and thin stock, which make the blade more sharp and durable. The hinge boring bits are specially designed for use on man-made timber which blunts ordinary forstner bits quickly.

Why We Like This:

Drill precise flat bottom holes with no chipping in any thickness of soft wood
Suitable for hard & soft woods, veneered & laminated boards
Delivers what they promise

Best For hardwood: Auniwaig 21 mm Wood Drill Bit

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Not everyone likes to purchase bit for their daily purpose, but the auniwaig 21 mm wood drill bit would be an anomoly. It is great for boring concealed hinges and door locks. It is made from high quality carbide tungsten steel and is hot-treated, sharp edge, high hardness, accurate positioning, high precision, smooth cutting, impact resistance, high toughness. The cylindrical cutter around the perimeter shears the wood fibers at the edge of the bore, and also helps guide the bit into the material more precisely. It includes a center point which guides it throughout the cut and incidentally spoils the otherwise flat bottom of the hole.

It has a design for easy chip-removal and no tremor. The bit in the positioning is required to very low speed, and then gradually accelerate after complete position. It can easily enlarge existing holes and bore any arc of a circle. It is easy to install, easy to use, and only needs to be installed in the ordinary hand drill that can be used.

Why We Like This:

Round shank, cemented carbide cutter and high-quality carbon structural steel (45# steel) body
Can be used for drilling holes on wood and plastic products
Small incision resistance to improve the opening speed, chip removal easily

Best For Cutting holes: Uxcell 21 mm Wood Drill Bit

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Uxcell has been making great bit for years, thanks to a combination of clever design and appropriate materials. The forstner drill bit is for ordinary purpose. It is made of solid hardened steel, with high hardness. It can easily enlarge existing holes and bore any arc of a circle. The sharp center spur accurately locates the center of your hole. It can be used in drill press, bench drill, vertical drilling machine, cnc carving machine.

It is made from cemented carbide (tungsten carbide) blade and is hardened and tempered. The bit in the positioning is required to very low speed, and then gradually accelerate after complete position. It is neat, smooth, and no broken edge.

Why We Like This:

Can be used for drilling holes on wood and plastic products, furniture, door hinge
Add water for lubrication and temperature reduction when drilling
Cuts nice and clean, true to the specified cut diameter
Featured with sharp edge, accurate positioning, high hardness, impact resistance, smooth cutting, high toughness

Best For bench Drill: Utoolmart 21 mm Wood Drill Bit

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The utoolmart 21 mm wood drill bit should be able to handle its purpose and duties with ease. It can be used on cutting wood, plywood, solid wood boards, mdf, plastics, fiberglass etc, but the forstner drill bit is for ordinary purpose. It is made of solid hardened steel, with high hardness. The sharp center spur accurately locates the center of your hole. It can not drill metal and non-ferrous metal, otherwise the hole opener will be damaged quickly.

It is suitable for bench drill, vertical drilling machine, hand held electric drill, impact drill, cnc carving machine and other drill press. The cutting material must be fixed, and the drill bit should be perpendicular to the material. The bit in the positioning is required to very low speed, and then gradually accelerate after complete position. It is neat, smooth, and no broken edge.

Why We Like This:

Small incision resistance to improve the opening speed
Can be used for drilling holes on wood and plastic products, furniture, door hinge
Add water for lubrication and temperature reduction when drilling
Arc curve design head for easy chip-removal, more efficient perforation

Best For boring concealed hinges: Hegebeck 21 mm Wood Drill Bit

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The hegebeck 21 mm wood drill bit's material feels more premium than its price would suggest. It is designed to cut through the hole cleanly. It is made by cemented carbide cutter and high-quality carbon structural steel (45# steel) body. It stays sharp and makes a nice smooth cut with a flat bottom. The sharp center spur accurately locates the center of your hole. It can be used for wood products perforation, mounted spherical door shoot tip, drawer, plastic and wood products, plywood, etc. It offers high visibility and a precise cutting effect. It is great for boring concealed hinges and door locks.

It comes with highly hardness and excellent workmanship design, these wood auger drilling bit will reduce drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably. It has the specfictions like sharp edge, high hardness, accurate positioning, high precision, smooth cutting, impact resistance, high toughness, high toughness.

Why We Like This:

Suitable for bench drill, vertical drilling machine, carving machine, etc
Can be used for drilling holes on wood and plastic products, furniture, door hinge
Arc curve design head for easy chip-removal, more efficient perforation
Add water for lubrication and temperature reduction when drilling

Best For door locks: Kozelo 21 mm Wood Drill Bit

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We would, of course, be remiss if we didn't mention kozelo 21 mm wood drill bit for regular usage. The centering spur can accurately center holes. It is used for drilling flat bottom holes, pocket holes, and overlapping holes. It is suitable for processing wood or soft non-metallic materials. The cutting edge and tip of the opener should be sharpened in time. It is good for boring concealed hinges and door locks. The drill bit is designed for general use.

Why We Like This:

Suitable for drilling holes on wood furniture
Only suitable for processing wood or soft non-metallic materials
Solid hardened steel shank for use with bench drills, vertical drill presses, cnc routers