... gauge:BSPT7.dies:2 1/2''-4'',5''-6''M24(round steel machine)1.machining range :8mm-24mm2.voltage :110V 220V 380V ... NPT7.dies:M8,M10,M12,M14,M16,M18,M20,M24M24(round steel machine)1.machining range :8mm-24mm2.voltage :110V 220V 380V ... NPT7.dies:M8,M10,M12,M14,M16,M18,M20,M24M33(round steel machine)1.machining range :10mm-33mm2.voltage :110V 220V 380V ... M18,M20,M24,1/2''-3/4'',1''-2'' pipe threading machine