SGS Pro® Carbide Burr, Imperial, Series: Universal SD, Radius, 1/4 in Head Dia, 7/32 in Length of Cut, 1-3/4 in Overall Length, Ball Head Shape, Double Cut Type, 1/8 in Shank Dia, Solid Carbide Head, Applicable Materials: Ferrous and Non-Ferrous Metals, SD-51 Industry Specification