FeaturesFree fitting threads insure easy assemblyPermits conduit coupling without rotating either conduitProvides rigid in-line coupling with high quality grounding will not loosen under vibrationSuitable for concretetight applicationCapable of carrying ground fault currents up to 10000 A RMS (1/2 in through 1-1/2 in size) and up to 20000 A RMS (2 in and above) (duration of fault current 3 cycles)1/2 in through 6 in conduit range