Use Bridgeport’s 530-DC 1/2" Screw-In Coupling to attach two individual lengths of flexible metal conduit or XRW FMC in a straight line. Die cast zinc connectors guarantee a precise fit, finish and excellent corrosion resistance for use in harsh environments. To install, simply screw coupling directly into grooved conduit. The coupling is ball burnished for a mirror-smooth finish. Bridgeport screw-in couplings come in flex trade sizes 1/2" to 2" and are all UL listed.