... .thread gauge:BSPT7.dies:2 1/2''-4'',5''-6''M24(round steel machine)1.machining range :8mm-24mm2.voltage :110V ... .thread gauge:NPT7.dies:M10,M12,M14-M16,M18-M22,M24-M27,M30-M35T50(dual-purpose machine)1.machining range :8mm ... and BSPT7.dies:M8,M10,M12,M14,M16,M18,M20,M24,1/2''-3/4'',1''-2'' pipe threading machine