Aircraft Extension Cle-Line Angle 135 Degrees Cutting Edge Material HSS No. of Flutes 2 Point Shape Split Coating Black Oxide Cle-Line List 1803 Aircraft Extension Drills O.A.Length 6 inch 27/64 RHS / RHC HSS 135 Degree Split Point Aircraft Extension Drill - Steam Oxide Tool Diameter 27/64 inch Shank Diameter 0.422 inch Flute Length 3-15/16 inch