The Bridgeport 5157-DC 3/4" To 3/8" Mighty-Merge® Combination EMT To FMC Or Duplex AC/MC Transition Coupling connects 3/4" EMT to two 14/2 to 10/3 AC/MC cable or 3/8" flexible metal conduit. The coupling has both an EMT fitting and AC/MC coupling. Made from zinc, the body provides corrosion resistance for long-term use in most environments. The coupling features a compression nut end to secure EMT. The transition coupling meets all the mechanical and electrical requirements of the National Electric Code.