Cyclone HSS Premium Grade Annular Cutter, 1 in dia x 2 in Depth, 3 4 in Weldon Shank, Includes Pilot Pin no checkout oils and graphite materials which oils and graphite materials which cannot be burned away or removed by slow moving parts Three layer design for superior protection against harsh chemicals The thinnest chemical resistant disposable glove for enhanced tactility and dexterity Extra soft material and ergonomic design for outstanding fit 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