Mighty-Merge® Two-To-One Transition Coupling 3/4″ To 1″, Zinc
https://nsiindustries.com/product/mighty-merge-two-to-one-transition-coupling-3-4-to-1-zinc/
The Bridgeport 3/4″ To 1″ Two-To-One EMT Transition Coupling consolidates two 3/4″ EMT conduits into one 1″ EMT conduit. The coupling is ideal for instances where there is a limited number of knockouts on a box or enclosure.