ATA SGSPRO Carbide Burr, Imperial, Series: Universal SN, Flat, 1/8 in Head Dia, 3/16 in Length of Cut, 1-1/2 in Overall Length, Inverted Cone Head Shape, Double Cut Type, 1/8 in Shank Dia, Solid Carbide Head, 10 deg Included Angle, Applicable Materials: Ferrous and Non-Ferrous Metals, SN-42 Industry Specification