3/64 RHS / RHC HSS-CO 8% (M42) 135 Degree Split Point Cobalt Heavy Duty Screw Machine Drill - Straw / Gold Oxide Tool Diameter 3/64 inch O.A.Length 1-3/8 inch Decimal Equivalent 0.0469 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