Monster Tool Company 5/16 2FL SE EXT XX/LG 1 1/2x6 TiN Carbide End Mill, 62730, Diameter: 5/16, Number of Flutes: 2, End Style: Square End, Length of Cut: 1-1/2, Overall Length: 6, Shank Diameter: 5/16, Helix: 30-Degree, Right Hand Cut, Material Base: Carbide, Finish / Coating: TiN