Taper Shank Cutting Edge Material HSS 27/64 RHS / RHC HSS 118 Degree Radial Point General Purpose Taper Shank Drill - Steam Oxide Tool Diameter 27/64 inch O.A.Length 7-1/4 inch Shank Type 1MT Decimal Equivalent 0.4219 inch Coating Black Oxide Measurement Type Inch Cle-Line Cle-Line List 1894 General Purpose Taper Shank Drills