... UL ,good strenthsile and none damage to electric machine te Cable Gland,(supply both Nylon material and Brass material). looks ... nice and good quality.also best prices.Nylon cable glandItem:PG, Metric (short screw thread,other size please inquring)Hemetic ... C.Trail: good elastisity,not cause damage to machine,the cable can be inserted through directly without disassembly,convenientUsage: used ...