threading machine 1. mechanical transmission reverse (gears) 2. threader speed:18-28RPM, 51RPM reverse ... production of safe precision threaded joints to approved standardsBSPT 1/2"-2"NPT 1/2"-2"Motor: 1200W Universal 115V or 220V ... RPM for threading, 51RPM reverse Capacity: 1/2" - 2 " Die Heads Included: 1/2", 3/4", 1", 1 1/4", 1 1/2", 2"(Type 11R) for ...