155mm wood auger bits with specialist screw-in point and hex shank. Specially ground cutting edges for clean, fast holes in softwood, hardwood, plywood, MDF and chipboard. Available from 6mm to 32mm diameter.
Size
Price
QTY
16mm x 155mm
£3.29£3.95
20mm x 155mm
£4.18£5.02
22mm x 155mm
£4.48£5.38
25mm x 155mm
£5.98£7.18
32mm x 155mm
£7.99£9.59
Wood auger bits are one of those things you only notice when they’re not up to scratch. A blunt or poorly made bit tears its way through timber, leaves ragged edges, and has you fighting the drill for every millimetre. These 155mm auger bits are designed, ground and sharpened to cut cleanly and quickly through a proper range of timber materials, which means less effort and a neater result every time.
The specialist screw-in point is what sets a decent auger bit apart from a flat bit or a standard twist drill. It pulls itself into the material as it cuts, giving you a fast start and keeping the bit on line without needing to lean into it. The result is a cleaner entry hole and a significantly tidier exit, which matters when you’re drilling through anything that’s going to be on show.
What These Wood Auger Bits Are Built For
The hex shank is a straightforward but genuinely useful feature. It locks into most standard rotary drill chucks and bracers without slipping, which is especially useful when you’re working at speed or applying side pressure. No more bit spinning in the chuck halfway through a hole. The shank design means these bits work in both corded and cordless rotary drills as well as manual bracers, so they cover most setups you’ll find on a working site.
Diameter Range and Material Compatibility
Available from 6mm right up to 32mm, there’s a size here for most through-boring jobs. The 155mm length gives you a useful reach without being so long that the bit becomes awkward to control in tighter spaces. These are particularly suited to softwood and hardwood, but they also handle plywood, MDF and chipboard without tearing out the face in the way that cheaper bits often do. That said, engineered boards can be abrasive, so keep an eye on edge sharpness if you’re working through a lot of MDF in one go.
At this price point, keeping a few spares on the van is a no-brainer. Auger bits blunt over time, and having a fresh one to hand costs less than the time spent fighting a tired bit on a job.
Pro Tip: When drilling through chipboard or MDF with auger bits, keep your drill speed steady rather than pushing hard. High pressure on engineered boards tends to cause tear-out on exit, especially around screw-in point entry. A piece of waste timber clamped to the back face solves it instantly.
These wood auger bits are used across joinery, first-fix carpentry, shopfitting, fencing, and general site work wherever clean through-holes are needed in timber or sheet materials. Common tasks include drilling for cable runs through studwork, bolt holes in structural timbers, dowel holes in furniture construction, and fixing holes through fence posts and rails.
The 6mm to 32mm range covers most standard fixings and services work. Smaller sizes suit cable management and dowelling, while larger diameters are used for lock body drilling, post bolts, and services penetrations through structural timber.
Best For
Clean through-holes in timber
Drilling softwood and hardwood
MDF, chipboard and particle board
Plywood sheet materials
Cable runs through studwork
Dowel and bolt hole boring
Works With
Standard rotary drill chucks
Cordless and corded drills
Manual bracers
Hex-compatible drill drivers
Key Features
Specialist screw-in self-feed point
Hex shank for anti-slip grip
Specially ground and sharpened cutting edges
155mm working length
Available in 6mm to 32mm diameters
Suitable for hard and soft wood
Clean entry and exit holes
Not suitable for: Not designed for masonry, metal or plastic. These are wood-specific bits and using them on harder materials will damage the cutting edges quickly.
Fit the auger bit into the drill chuck and tighten fully. The hex shank should seat cleanly without play. Mark your hole position, press the screw-in point onto the mark, and start the drill at a steady speed. The point will pull the bit forward on its own, so there's no need to force it.
Keep the drill as square to the surface as you can for the cleanest hole. When drilling through timber rather than into it, back a piece of scrap against the exit face to prevent breakout. With MDF or chipboard, a moderate drill speed gives a cleaner cut than running flat out.
Select the correct diameter for your application before starting.
Insert the hex shank fully into the drill chuck and tighten until secure.
Mark the hole centre clearly on the workpiece.
Position the screw-in point on the mark and start the drill at a steady, moderate speed.
Allow the self-feed point to draw the bit forward without forcing the drill.
Keep the drill square to the surface throughout the cut.
When drilling through material, clamp a waste timber offcut to the exit face to prevent tear-out.
Clear swarf from the flutes periodically when drilling deep or through dense engineered boards.
Will these auger bits fit a standard cordless drill?
Yes. The hex shank fits into any standard 10mm or 13mm chuck found on cordless and corded rotary drills. They also work in manual bracers, which is useful in tight spaces where a power drill won't fit.
Can I use these wood auger bits on MDF and chipboard?
Yes, they're designed for it. MDF and chipboard are more abrasive than natural timber so expect slightly faster wear on the cutting edges if you're drilling a large volume. The screw-in point and ground cutting edges still produce a much cleaner result than a standard twist bit.
What sizes are available?
These 155mm auger bits are available in 6mm, 8mm, 10mm, 13mm, 16mm, 20mm, 22mm, 25mm and 32mm diameters. Each size is sold individually, so you can buy exactly what you need rather than paying for a set with sizes you'll never touch.
These auger bits feature a hardened steel construction with specialist ground and sharpened cutting edges for clean entry and exit. The screw-in self-feed point provides positive engagement with the material, reducing the need for applied pressure. The hex shank is machined to standard dimensions for positive chuck engagement across most rotary drill platforms. Available in nine diameters from 6mm to 32mm, all at 155mm length.
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