Cyclone HSS Premium Grade Annular Cutter, 9 16 in dia x 2 in Depth, 3 4 in Weldon Shank, Includes Pilot Pin no checkout of Knots 20 Packing Type of Knots 20 Packing Type Clamshell Prop 65 YES Quarterly Flier NO Special Order NO Stock Status In Stock Structure Knot Wire UNSPSC 27111907 Welding Catalog NO High removal rate 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