Monster Tool Company .042 4FL SE Stub Carbide End Mill, 64897, Diameter: .042, Number of Flutes: 4, End Style: Square, Length of Cut: 0.063, Overall Length: 1.5, Shank Diameter: 0.125, Helix: 30-Degree, Right Hand Cut, Material Base: Carbide, Finish / Coating: Uncoated