Mighty-Bite® PUSH-EMT® Raintight Coupling 1/2″, Zinc
https://hotfix.nsiindustries.com/product/mighty-bite-push-emt-raintight-coupling-1-2-zinc/
The Bridgeport 1/2″ 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.