Taper Shank Cutting Edge Material HSS 15/64 RHS / RHC HSS 118 Degree Radial Point General Purpose Taper Shank Drill - Steam Oxide Tool Diameter 15/64 inch O.A.Length 6-1/8 inch Shank Type 1MT Decimal Equivalent 0.2344 inch Coating Black Oxide Measurement Type Inch Cle-Line Cle-Line List 1894 General Purpose Taper Shank Drills