Carbide Bur End Type Pointed Cut Type Double Shank Dia 1/4 in Head Dia 1/4 in Head Length 1/2 in Included Angle 22 Degrees Overall Length 2 in Trade Number SM-1 Primary Material Application Cast Iron Stainless Steel Steel Head Shape Cone Shank Length 1 1/2 in Operating Speed - Maximum 30 000 RPM System of Measurement Inch Coating Bright (Uncoated) Compatible Tool Type Die Grinder Rotary Power Tool Straight Grinder Head Material Carbide Head Material Grade YG7