Monster Tool Company F (0.2570) Carbide Stub Drill AlTiN, Diameter: F, Number of Flutes: 2, Single End, Right Hand Cut, Included Angle: 135-Degree, Overall Length: 2-5/8, Shank Diameter: .257, Application: Precision drilling in cast iron, stainless steel, tool steel, titanium and nickel alloys. AlTiN, MPN: 68624, PKG QTY: 1 PC