Cylinder Bur SA Cut Type Single Shank Dia 1/4 in Head Dia 1/2 in Head Length 1 in Included Angle Not Applicable Overall Length 6 in Trade Number SA-5L6 Head Shape Cylinder Operating Speed - Maximum 50 000 RPM List Number 961 Coating Bright (Uncoated) Head Material Carbide Shank Material Hardened Steel