Description The ApolloPEX 1/2 in. Copper Pro Crimp Ring is simple to install and is designed for use with PEX pipe and barb fittings (not included). Made from copper for durability. Pro Crimp Rings feature an end stop that ensures proper placement of the ring on the pipe end. The end stop also prevents the Pro Crimp Ring from sliding or moving on the pipe prior to being secured. Requires a crimping tool (sold separately). ApolloPEX fasteners are a key component of the most economical potable water piping systems. Also capable of integration into hydronic heating systems, ApolloPEX fasteners can be can be used with brass and plastic fittings, valves, and manifolds (all sold separately). The ApolloPEX system is a comprehensive piping system comprised of brass fittings, poly alloy fittings, manifolds, valves, fasteners, tools and tubing designed for implementation in water delivery systems, simple or complex.PRODUCT DETAIL:End stop prevents slippage and ensures a good connection Innovative design prevents ring slippage and ensures proper ring placement each time Designed for use with 1/2 in. PEX pipe and 1/2 in. PEX barb fittings Copper construction Pro pack includes 10 copper crimp rings Requires crimping tool (sold separately) for use Also available in 3/4 in. ASTM F1807