Aircraft Extension Cle-Line Angle 135 Degrees Cutting Edge Material HSS No. of Flutes 2 Point Shape Split Coating Black Oxide 3/8 RHS / RHC HSS 135 Degree Split Point Aircraft Extended Length Extension Drill - Steam Oxide Cle-Line List 1805 Aircraft Extended Length Extension Drills Tool Diameter 3/8 inch Shank Diameter 3/8 inch Flute Length 3-5/8 inch O.A.Length 12 inch