EMT Yellow Coupling 2-1/2″, Steel, Easy Identification
https://nsiindustries.com/product/emt-yellow-coupling-2-1-2-steel-easy-identification/
The Bridgeport 2-1/2″ Steel Yellow Coupling ensures a secure connection between two lengths of yellow EMT conduit in special equipment, caution areas and high voltage applications. The EMT yellow coupling ensures easy identification.