Monster Tool Company 1mm 2FL SE REG (4mm LOC) Carbide End Mill, 61318, Diameter: 1.0, Number of Flutes: 2, End Style: Square End, Length of Cut: 4.0, Overall Length: 39.0, Shank Diameter: 3.0, Helix: 30-Degree, Right Hand Cut, Material Base: Carbide, Finish / Coating: Uncoated