Taper Length Measurement Type Inch Coating Black Oxide Cleveland List 2510 General-Purpose Taper Length Drills 59/64 RHS / RHC HSS 118 Degree Radial Point General Purpose Taper Length Drill - Steam Oxide Tool Diameter 59/64 inch O.A.Length 10-3/4 inch Decimal Equivalent 0.9219 inch Cutting Edge Material HSS Shank Type Round Cleveland