COLT HSS M2 pen blank drill bit 9.35mm, letter "U"

COLT pen blank drill bits are made using the best quality HSS M2 steel giving the cutting edge maximum wear resistance.

These bits feature a unique cutting head with a patented centring point and a parabolic flute design to give minimal risk of jamming or chip burn.

These bits can drill much faster than normal bits. We recommend you watch the video to see just how fast they are.