Carbide Bur, End Type Pointed, Type Double, Shank Dia. 1/4 in, Head Dia. 3/8 in, Head Length 5/16 in, Included Angle 60 Degrees , Overall Length 2 1/8 in, Trade Number SJ-3, Primary Material Application Brass, Bronze, Carbon Steel, Cast Iron, Copper, Stainless Steel, Steel, Titanium, Head Shape Cone, Operating Speed - Maximum 60,000 RPM, List Number 310J, System of Measurement Inch, Coating Bright (Uncoated), Head Material Carbide, Head Material Grade C2 Submicron, Shank Material Steel