Description The ApolloPEX 1/2 in. Copper Crimp Ring (50-Pack) is simple to install and is designed for use with PEX pipe and barb fittings (not included). Made from copper for durability. 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:Copper construction Designed for use with 1/2 in. PEX pipe and 1/2 in. PEX barb fittings Pro pack includes 100 copper crimp rings Requires crimping tool (sold separately) for use Note: product may vary by store Meets ASTM F1807 requirements