ATA SGSPRO Carbide Burr, Metric, Series: Universal SJ, 3 mm Diameter Head, 2.5 mm Length of Cut, 38 mm Overall Length, Cone Head Shape, Single Cut, 3 mm Shank Diameter, Solid Carbide Head, 60 deg Included Angle, Applicable Materials: Non-Hardened Steel, Stainless Steel, Nickel, Cobalt, Titanium, Brass, Copper, Zinc and Cast Iron, Industry Specification: SJ-42M