Carbide Bur, End Type Pointed, 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