Wood Drill Bits

Discover our range of wood drill bits from Bahco, DEWALT, Faithfull, Irwin and Starrett, covering flat bits, self-feed bits, auger bits, Forstner bits and lip & spur bits from 3mm up to 76mm diameter.

Different wood drilling tasks call for different bit designs. Flat and spade bits give fast, general-purpose holes, self-feed bits pull themselves through timber for large diameter holes with minimal pressure, auger bits clear deep holes efficiently, and Forstner and lip & spur bits give the cleanest, flattest-bottomed holes for cabinetry and detail work.

Self-Feed Drill Bit
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Wood Drill Bits – Product list

Flat and spade bits for general drilling

Flat bits, also called spade bits, are the standard everyday choice for quick, general-purpose holes in timber. The DEWALT Flat Wood Drill Bit range and Irwin's Blue Groove 4X Flat Bit range, including the 8 Piece Set, cover common diameters for cable and pipe holes, hinge recesses and general boring. The Faithfull Impact Rated Flat Bit is built specifically to withstand impact driver use, where a standard flat bit's shank might not hold up.

Self-feed bits for large diameter holes

DEWALT's Self-Feed Drill Bit range, spanning 38mm through 51mm, 57mm, 76mm and beyond, uses a screw tip that pulls the bit through the timber, reducing the pressure needed from the operator for large diameter holes such as those for plumbing and electrical services through joists. A Self Feed Extension Piece extends reach for deeper joist penetrations.

Auger bits for deep, clean holes

Auger bits use a spiral flute to clear waste efficiently from deep holes, making them well suited to boring through thick timber sections. The Bahco 9526 Combination Wood Auger Bit Set and Irwin Wood Auger Drill Bit cover diameters from 10mm up to 30mm, with the Irwin Auger Drill Bit Extension and Bahco 9525-7 Extension adding reach for deeper penetrations. Faithfull's Tri-Point Speed Auger range, including standard and stubby versions, uses a tri-point tip for faster starts without wandering.

Forstner bits for flat-bottomed holes

Forstner bits cut exceptionally clean, flat-bottomed holes, essential for cabinetry, hinge boring and decorative work where a rounded-bottom hole wouldn't suit the fitting. The Faithfull Forstner Bit range covers diameters from 10mm up to 45mm, individually or as a 5 Piece Set, and Starrett's Flat Wood Drill Bit Set extends the flat bit range further for general boring alongside Forstner-style precision work.

Lip & spur bits for precise, splinter-free holes

Faithfull's Lip & Spur Wood Drill Bit range, from 3mm up to 16mm, or as a 5 Piece Set, uses spurs at the cutting edge to score the timber before the main flutes cut, giving a cleaner entry hole with less splintering than a standard twist bit, particularly useful for visible joinery work.

Hinge boring and specialist bits

The DEWALT TCT Hinge Boring Bit is purpose-built for cutting the recessed holes concealed hinges need in cabinet doors, while brad point bits, such as the DEWALT Brad Point Drill Bit Set, use a centring point for precise starting positions on smaller diameter holes in furniture and joinery work.

Choosing the right bit for the job

Match the bit type to the hole quality and diameter needed: flat bits for quick, general holes, self-feed bits for large diameters through joists with minimal effort, auger bits for deep clean holes in thick timber, and Forstner or lip & spur bits where a clean, precise hole matters more than drilling speed, such as visible cabinetry and furniture work.

Why buy your wood drill bits from MTN Shop

All wood drill bits sold here are genuine stock from Bahco, DEWALT, Faithfull, Irwin and Starrett. We ship fast across the UK with straightforward returns on unused stock. For trade or bulk orders, request a quote and our team will confirm stock and lead time directly. For any other questions, contact us and our team will be happy to help.

Frequently Asked Questions

A flat bit is a general-purpose bit for quick holes at common diameters. A self-feed bit has a screw tip that pulls itself through the timber, reducing the pressure needed from the operator, better suited to large diameter holes such as those for services through joists.
A Forstner bit cuts an exceptionally clean, flat-bottomed hole, essential for cabinetry, hinge recesses and decorative work where a standard drill bit's rounded hole bottom wouldn't suit the fitting.
The spurs score the timber at the edge of the hole before the main flutes cut, giving a cleaner entry with less splintering than a standard twist bit, particularly useful on visible joinery and furniture work.
Auger bits clear waste more efficiently from deep holes thanks to their spiral flute design, making them better suited to boring through thick timber sections than a flat bit, which is designed more for quick, shallower holes.
It cuts the specific recessed hole needed for concealed cabinet hinges, a precise diameter and depth that a general-purpose flat or auger bit isn't designed to replicate accurately.