The KFWDK08 is a set of eight flat wood hex drill bits in 12, 16, 18, 20, 22, 25, 28 and 32mm, each 152mm long. Fast, clean cutting in all wood with a big reduction in breakout around the hole and long tool life. Twin spurs cut a clean rim, the face and tip are precision ground for an accurate, fast start, and a specialised heat treatment extends tool life. The 6.35mm (1/4) hex shank fits impact drivers.