Cylinder Bur SA, Type Double, Shank Dia. 1/4 in, Head Dia. 5/8 in, Head Length 1 in, Included Angle Not Applicable, Overall Length 2 in, Trade Number SA-6, Head Shape Cylinder, Operating Speed - Maximum 40,000 RPM, List Number 801, Coating Bright (Uncoated), Head Material Carbide, Shank Material Hardened Steel