For fast drilling-accuracy when producing through-holes, pre-drilling for rafter nails and drilling deep dowel holes in wood. Heavy-duty self-feeding tip pulls the bit through completely, which allows for quick and effortless precision-drilling. Optimised low-friction flute geometry with a solid centre and scoring spur with precision-ground main cutting edge deliver straight, accurate holes, high chip removal rate and increased speed. Ideal for use in the ancillary building trades, for carpenters and roofers, and is suitable for soft and hard wood. Hexagonal shank system for maximum power transfer in standard three-jaw drills and hexagonal drill driver chucks with a 13mm chuck. Suitable for Soft & Hard Wood 11mm Hex Shank Steel Self-Feeding Threaded Tip 95mm Working Length For Use with 3-Jaw Chuck Machines on Rotary Action Suitable for Soft & Hard Wood 11mm Hex Shank Steel Self-Feeding Threaded Tip 95mm Working Length For Use with 3-Jaw Chuck Machines on Rotary Action