pMorse Carbide Burr, Premium, Series 5970, Plain, 38 in Head Dia, 34 in Length of Cut, 218 in Overall Length, CylindricalNo End Cut Shape SA Head Shape, Double Cut Type, 14 in Shank Dia, Solid Carbide Head, Bright Head Coating, 45 deg included Angle, 38000 rpm Maximum, Applicable Materials Cast Iron, Ferrous Metals and Steel, SA3 industry Specificationp.