Create a leak-resistant connection between pipes using the PVC 1/2 in. CTS UC Compression Coupling. This easy-fit coupling has two compression ends that slide onto 1/2 in. CTS pipe ends. There's an adjustable nut on each end of the coupling to tighten and secure it in place. The compression coupling provides a corrosion-free connection and reduces pull-out from pipes. Durable compression coupling is made of PVC plastic.