Monster Tool Company 5/16 2FL SE Stub AlTiN Carbide End Mill, 61068, Diameter: 5/16, Number of Flutes: 2, End Style: Square End, Length of Cut: 1/2, Overall Length: 2, Shank Diameter: 5/16, Helix: 30-Degree, Right Hand Cut, Material Base: Carbide, Finish / Coating: AlTiN