Bosch Auger Drill Bits | 170mm Usable Length | 235mm Overall Length
Wood auger drill bits with threaded centring tip and one main and one pre-cutting spur. Generous, smooth flute for chip removal without jamming, even suitable for wet wood. The hexagonal tool holder enables firm and non-slip fitting in the drill chuck. For drilling in all types of soft and hard wood. Particularly suitable for deep peg dowel holes and to pre-drill for rafter nails.