The Bridgeport 290-S 1/2" To 1/2" Combination EMT To IMC Or Rigid Transition Coupling is a compression type end used to connect 1/2" EMT to 1/2" intermediate metal conduit or rigid. Made from steel, the body provides corrosion resistance for long-term use in non-acidic environments. The coupling features a tri-drive slot to secure the EMT and IMC or rigid. The transition coupling meets all the mechanical and electrical requirements of the National Electric Code.