pMorse Carbide Burr, Premium, Series 5970, Radius, 34 in Head Dia, 1 in Length of Cut, Tree Radius Shape SF Head Shape, Double Cut Type, 14 in Shank Dia, Solid Carbide Head, Bright Head Coating, 19000 rpm Maximum, Applicable Materials Brass, Cast Iron and Copper, SF7 industry Specificationp.