15/64 RHS / RHC HSS-CO 8% (M42) 135 Degree Split Point Cobalt Heavy Duty Screw Machine Drill - Straw / Gold Oxide Tool Diameter 15/64 inch O.A.Length 2-7/16 inch Decimal Equivalent 0.2344 inch Cleveland List 2133 Cobalt Heavy-Duty Screw Machine Drills Coating Straw-Gold Oxide Measurement Type Inch Cutting Edge Material HSSCoPM Shank Type Round Cleveland Screw Machine