Carbide Bur End Type Flat 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 3/4 in Trade Number SA-3L6 Primary Material Application Brass Bronze Cast Iron Zinc Head Shape Cylinder Operating Speed - Maximum 66 000 RPM List Number 1845 System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Shank Material Hardened Steel