Raintight Compression Coupling, 1-1/4″, Steel
https://dev.nsiindustries.com/product/raintight-compression-coupling-1-1-4-steel/
The Bridgeport 1-1/4″ Raintight Steel Compression Coupling used to join two lengths of unthreaded rigid or IMC conduit creates a watertight seal and long-lasting fit in a wet location.