Carbide Bur End Type Cut Cut Type Steel Shank Dia 1/4 in Head Dia 1/2 in Head Length 1 in Included Angle Not Applicable Overall Length 2 3/4 in Trade Number SB-5 Primary Material Application Cast Iron Steel Head Shape Cylinder Operating Speed - Maximum 35 000 RPM System of Measurement Inch Coating Bright (Uncoated) Head Material Carbide Shank Material Steel