Monster Tool Company .031 4FL SE REG .010R Carbide End Mill, 65485, Diameter: .031, Number of Flutes: 4, End Style: Corner Radius, Length of Cut: 0.093, Overall Length: 1.5, Shank Diameter: 0.125, Helix: 30-Degree, Right Hand Cut, Material Base: Carbide, Finish / Coating: Uncoated