HIGH QUALITY MATRIX Quick and clean smooth, straight holes in hardwood or cork.7 SIZES There are 6 different diameters of auger drill bits. including 6mm. 8mm. 10mm. 12mm. 14mm.16mm. 18mm. total length: 230mm / 9.05 &39;&39;. to meet your various needs.SDSThe unique design ensures that the shank will not slip during operation. and the SDS shank can be used with hand drills and drill presses.SELF-DIRECTED WIRE HEAD The automatic threaded head at the front of the bit allows the bit to be positioned accurately and quickly on wood to facilitate drilling. Large and wide blade central helical drill. The solid center design makes the drill bit stable and sturdy during the drilling process. The wide blade allows for faster drilling. facilitates scaling and softens hole walls.DIY ACCESSORY High quality carbon steel auger tips are rust resistant and durable.