SGS Pro® Carbide Burr, Imperial, Series: Universal SD, Radius, 1/8 in Head Dia, 1/8 in Length of Cut, 1-1/2 in Overall Length, Ball Head Shape, Double Cut Type, 1/8 in Shank Dia, Solid Carbide Head, 100000 rpm Maximum, Applicable Materials: Ferrous and Non-Ferrous Metals, SD-42 Industry Specification