Cyclone HSS Premium Grade Annular Cutter, 1 1 8 in dia x 2 in Depth, 3 4 in Weldon Shank, Includes Pilot Pin ORS NASCO Engineered to perform better than Engineered to perform better than rubber or plastic face hammers Hammer faces are abrasion and impact resistant Designed to withstand severe striking applications and are surface protective Self laminating tags can be personalized by writing on special instructions 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