Cyclone HSS Premium Grade Annular Cutter, 9 16 in dia x 2 in Depth, 3 4 in Weldon Shank, Includes Pilot Pin no checkout Single flute cutting edge for greater Single flute cutting edge for greater control through steps Hex shank prevents slipping in drill chuck Also available with (TiN) coating for longer life New SpeedPoint tip penetrates faster than previous Unibits and prevents walking Ideal for drilling holes into thin materials such as stainless steel proven rear load magazine Evolution standard geometry is sufficient for most drilling applications Manufactured specifically to maximize hole accuracy while minimizing cutter vibration and extending annular cutter life Using this standard geometry enhances accuracy and saves time This allows for a single ejection of slugs when drilling through stacked material