1/2" Dia. Mini Solid Carbide Boring Bar, CCMT 21.51, Right Hand

0.500" shank with a ground clamping flat, 5.000" overall length, 95° lead angle. Bores from 0.512" diameter. CCGT inserts of the same size also fit. No through-coolant; Torx clamping screw included, T-8 key not. The carbide shank is about three times stiffer than steel and holds size at overhangs where a steel bar chatters.