Monster Tool Company .020 4FL SE REG .005R Carbide End Mill, 65475, Diameter: .020, Number of Flutes: 4, End Style: Corner Radius, Length of Cut: 0.060, Overall Length: 1.5, Shank Diameter: 0.125, Helix: 30-Degree, Right Hand Cut, Material Base: Carbide, Finish / Coating: Uncoated