EMT Screw-on Compression Coupling 1″, Steel, Concrete Tight
https://nsiindustries.com/product/emt-screw-on-compression-coupling-1-steel-concrete-tight/
The Bridgeport 1″ Steel Screw-on Compression Coupling ensures a secure, concrete-tight connection between two lengths of EMT conduit. The coupling uses a screw-on compression fitting to keep the EMT conduit locked in place.