Mighty-Bite® PUSH-EMT® Raintight Coupling 3/4″, Zinc
https://dev.nsiindustries.com/product/mighty-bite-push-emt-raintight-coupling-3-4-zinc/
The Bridgeport 3/4″ PUSH-EMT Raintight Coupling is used to establish a securely couple two lengths of EMT raceway in wet locations. Push-on installation makes this fitting easy to install and reuse the thread by unthreading and moving to another location.