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, Double Cut Type, 1/4 in Shank Dia, Solid Carbide Head, 14 deg Included Angle, Applicable Materials: Ferrous and Non-Ferrous Metals, SL-1 Industry Specification