The Bridgeport 1121 1/2-Inch Three-Piece Zinc-Electroplated Malleable Iron Conduit Coupling is your quick-connect solution to join two lengths of threaded rigid or IMC conduits. The concrete-tight heavy-duty coupling provides corrosion resistance and the highest protection from physical damage caused by crushing or abrasion in areas requiring good heat tolerance, fracture toughness and impact resistance. With an overall length of 1-5/16 inches and a 1-3/8-inch diameter, the coupling is solidly built to meet construction and general industry OSHA-recognized, NRTL-listed electrical standards and the stringent bonding and grounding requirements of 514B cULus. Bridgeport's wide selection of products is manufactured for innovation, consistency and quality — providing you with connectors, couplings, or transition fittings that are safety listed, ensuring code compliance to meet your needs enabling you to do your best work at a lower total cost. We build every product with the same goal in mind: guaranteeing a fast, professional-grade, trouble-free installation. When you need a solution you can depend on, be sure to look for Bridgeport Orange.