Size: 1.070 Inch ID x 1.220 Inch OD x 7.500 Inch Length Bridgeport Mighty-Move Expansion coupling offers enhanced protection to the conduit wiring systems from damage due to movements. It features steel construction to offer enhanced durability. The 3/4-Inch coupling has an elegant zinc plating to offer enhanced durability and corrosion resistance. It measures 1.070 Inch inner diameter x 1.220 Inch outer diameter x 7.500 Inch. Expansion coupling has low profile design for sealing joints in height restrictions areas. It comes with RMC/IMC setscrews to offer easy and convenient installation. Coupling is ideally designed for IMC and rigid conduits. Expansion coupling is UL listed. Mighty-Move Expansion Coupling 3/4 Steel expansion coupling for IMC and Rigid Conduit Product Specification Application Assembles like a regular RMC/IMC set screw coupling. To install, simply slide coupling end stop onto fixed end of RMC/IMC and tighten screw. Place movable RMC/IMC completely into coupling and mark engagement, remove RMC/IMC and mark half the distance of engagement, reinstall RMC/IMC to half distance. Patented Brand Bridgeport Cable Entry Through Rigid conduit into expansion throat back to conduit Finish Zinc Plated 00781747044013 Item Status A Material Steel Ships Freight No Ships Ground. Eligible for expedited shipping Yes Size 0.75 Special Features Low Profile; Easy Installation Standard UL Type Coupling