Taper Length Measurement Type Inch Coating Black Oxide Cleveland List 2510 General-Purpose Taper Length Drills 49/64 RHS / RHC HSS 118 Degree Radial Point General Purpose Taper Length Drill - Steam Oxide Tool Diameter 49/64 inch O.A.Length 9-7/8 inch Decimal Equivalent 0.7656 inch Cutting Edge Material HSS Shank Type Round Cleveland