Monster Tool Company 1mm 4FL SE REG TiCN Carbide End Mill, 61994, Diameter: 1, Number of Flutes: 4, End Style: Square End, Length of Cut: 4, Overall Length: 1-1/2, Shank Diameter: 3, Helix: 30-Degree, Right Hand Cut, Material Base: Carbide, Finish / Coating: TiCN