Cyclone HSS Premium Grade Annular Cutter, 13 16 in dia x 2 in Depth, 3 4 in Weldon Shank, Includes Pilot Pin no checkout Rapid strip material provides a Rapid strip material provides a unique combination of aggressive performance efficient and safe power management with a facility Choose from a variety of plugs and receptacles 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