Carbide Bur End Type Radius Cut Type Single Shank Dia 1/4 in Head Dia 1/4 in Head Length 1/2 in Included Angle Not Applicable Overall Length 6 1/2 in Trade Number SF-1L6 Primary Material Application Cast Iron Ferrous Metals Non-Ferrous Metals Steel Head Shape Tree Operating Speed - Maximum 70 000 RPM List Number 1848 System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Shank Material Hardened Steel