The aluminum reverse threaded coupler from US Coupler is designed with a smooth exterior wall tailored for SDR duct applications, ensuring a reliable and consistent fit. Its innovative construction features sharp buttress-type threads that not only meet but exceed the Bellcore 1000 lb tensile standard, providing strength and durability in various scenarios, including manholes, direct bury, and aerial installations. The wide eight-pitch thread angle significantly reduces the number of installation rotations required, streamlining the setup process and enhancing efficiency. Available in both smooth and ribbed exterior wall options, this coupler suits the specific needs of your plumbing or conduit system while demonstrating the quality typical of 6061-T6 aluminum material.