FeaturesEliminate the need for threading conduit ends when joining rigid conduit with these set screw couplingsA split steel ring with diagonal serrations grips the conduit and bites into it for positive groundMakes a permanent connection and eliminates the need for cutting a thread on the conduitInsulation helps to guarantee continuity of service with protection of the conductor at the critical point the fitting bushing1-7/32 in L threadNylon insulator