Monster Tool Company 8mm 4FL SE REG (20mm) Carbide End Mill, 62038, Diameter: 8.0, Number of Flutes: 4, End Style: Square End, Length of Cut: 20.0, Overall Length: 63.0, Shank Diameter: 8.0, Helix: 30-Degree, Right Hand Cut, Material Base: Carbide, Finish / Coating: Uncoated