Cylinder Bur SA Cut Type Single Shank Dia 1/4 in Head Dia 3/8 in Head Length 3/4 in Included Angle Not Applicable Overall Length 6 in Trade Number SA-3L6 Head Shape Cylinder Operating Speed - Maximum 63 000 RPM List Number 961 Coating Bright (Uncoated) Head Material Carbide Shank Material Hardened Steel