ATA SGSPRO Carbide Burr, Imperial, Series: Universal SL, Radius, 1/4 in Head Dia, 5/8 in Length of Cut, 2 in Overall Length, Taper Head Shape, Single Cut Type, 1/4 in Shank Dia, Solid Carbide Head, 14 deg Included Angle, 55000 rpm Maximum, Applicable Materials: Non-Hardened Steel, Stainless Steel, Nickel, Cobalt, Titanium, Brass, Copper, Zinc and Cast Iron, SL-1 Industry Specification