Monster Tool Company 1 4FL SE SH REG (1x4) Carbide End Mill, 61985, Diameter: 1, Number of Flutes: 4, End Style: Square End, Length of Cut: 1, Overall Length: 4, Shank Diameter: 1, Helix: 30-Degree, Right Hand Cut, Material Base: Carbide, Finish / Coating: Uncoated