CONDUIT, PIPE, FITTINGS | Control and Motor | For Adapting Non-Metallic Conduits to Boxes, Threaded Fittings, Metallic Systems | For Use to Secure and Terminate Steel Emt to Knockouts and Concrete Tight Box | For Use With Rigid/imc or Emt Conduits | Use Through Knockout to Connect Box to Conduit Coupling, Use With Locknut to Connect Two Boxes Side by Side | Used With Locknut to Terminate Rigid and Imc Conduit to an Enclosure, Provides a Smooth Pulling Surface