Harvey Tool 776550-C3 | 5/16" Diameter x 3/32" Width x 5/16" Shank AlTiN Coated Carbide Woodruff-Keyseat CutterBrowse from Harvey Tool's massive, fully stocked selection of corner radius profile Keyseat Cutters. Both sides of cutter are dished for clearance Corner radius for improved strength Solid carbide CNC ground in the USA Product Specifications Cutter Diameter (Inch) 0. 3125" (5 16) Neck Diameter (Inch) 0. 1560" (5 32) Cutter Width (Inch) 0. 0930" (3 32) Neck Length (Inch) 0. 4680" (15 32) Overall Length (Inch) 2. 5000" (2 1 2) Radial Depth of Cut (Inch)