The US Coupler AR1.050 is a 3/4-inch aluminum reverse threaded coupler (1.050" OD) for SDR HDPE innerduct conduit. The sharp buttress-type threads withstand high pulling loads meeting or exceeding the Bellcore tensile standard of 1,000 lbs. The wide eight-pitch thread angle reduces the revolutions needed for installation to half compared to competitive couplings. Machined with a straight thread and long counterbore lead-in for easy starting. Available for smooth exterior wall. Suitable for manhole, direct bury, and aerial applications. Not suitable for air or water tight connections. Made from 6061-T6 aluminum.