Rigid Or IMC To Enclosure Connector 3/4″, Zinc, Set Screw
https://nsiindustries.com/product/rigid-or-imc-to-enclosure-connector-3-4-zinc-set-screw/
The Bridgeport 3/4″ Zinc Die Cast Set Screw Rigid Or IMC To Enclosure Connector joins unthreaded rigid or IMC conduit to a box or enclosure. The seal is concrete tight when taped. The connection is secured via the set screw.