pMARXMAN Carbide Burr, General Purpose, Series 597, 18 in Head Dia, 58 in Length of Cut, Cylindricalwith End Cut Shape SB Head Shape, Double Cut Type, 18 in Shank Dia, Solid Carbide Head, Bright Head Coating, 65000 rpm Maximum, Applicable Materials Brass, Cast Iron and Copper, SB43 Industry Specificationp