ATA SGSPRO Carbide Burr, Imperial, Series: Universal SG, Pointed, 1/2 in Head Dia, 1 in Length of Cut, 2-3/4 in Overall Length, Tree Head Shape, Double Cut Type, 1/4 in Shank Dia, Solid Carbide Head, 28000 rpm Maximum, Applicable Materials: Ferrous and Non-Ferrous Metals, SG-5 Industry Specification