Carbide Bur End Type Radius Cut Type Double Shank Dia 1/4 in Head Dia 3/4 in Head Length 1 in Included Angle Not Applicable Overall Length 2 3/4 in Trade Number SE-7 Primary Material Application Brass Bronze Cast Iron Copper Nickel Steel Zinc Head Shape Oval Shank Length 1 3/4 in Operating Speed - Maximum 20 000 RPM System of Measurement Inch Coating Bright (Uncoated) Compatible Tool Type Die Grinder Rotary Power Tool Straight Grinder Head Material Carbide