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