Bosch 2608597635 Auger Drill Bit For Wood with Hex Shank 25mm x 160 mm x 235mm The Bosch 2608597635 Auger Drill Bit is specially designed for fast drilling accuracy in wood. It features a heavy duty self feeding tip which pulls the bit through completely for quick precision drilling. The optimised low friction flute geometry design with solid centre ensures a high chip removal rate and straight holes. It has a hexagonal shank system which works with all drill drivers with a 13mm chuck and is extra long. Features: Ideal for fast drilling accuracy when producing through holes, pre-drilling for rafter nails and drilling deep dowel holes in wood The heavy duty self feeding tip pulls the bit through completely which allows for quick and effortless precision-drilling Low friction flute geometry with a solid centre ensures straight holes and a high chip removal rate  Suitable for drilling soft and hard wood Its hexagonal shank system works with all drill drivers with a 13mm chuck It is ideal for use in the ancillary building trades, for carpenters and roofers Specification: Diameter: 25mm Working length: 160mm Total length: 235mm