4 in setscrew connectors are used in dry locations to bond 4 in unthreaded rigid or IMC conduits to electrical junction boxes or electrical enclosures. Steel setscrew connectors provide concrete tight connections when taped. Garvin Industries heavy gauge steel construction maintains mechanical protection and solid grounding of the conduit to the designated electrical junction box or enclosure. These connectors eliminate the need to thread bald conduits to connect them to boxes or enclosures. setscrew connectors are zinc electroplated for excellent corrosion protection in damp locations.