Cylinder Bur SA Cut Type Single Shank Dia 1/4 in Head Dia 5/16 in Head Length 3/4 in Included Angle Not Applicable Overall Length 2 in Trade Number SA-2 Head Shape Cylinder Operating Speed - Maximum 65 000 RPM List Number 901 Coating Bright (Uncoated) Head Material Carbide Shank Material Hardened Steel