... 2 1/2''-4'',5''-6''M24(round steel machine)1.machining range :8mm-24mm2.voltage :110V 220V ... thread gauge:NPT7.dies:M8,M10,M12,M14,M16,M18,M20,M24M24(round steel machine)1.machining range :8mm-24mm2 ... thread gauge:NPT7.dies:M8,M10,M12,M14,M16,M18,M20,M24M33(round steel machine)1.machining range :10mm-33mm2 ... gauge:NPT7.dies:M10,M12,M14-M16,M18-M22,M24-M27,M30-M35T50(dual-purpose machine)1.machining range ...