The ApolloPEX 8 in. x 1/2 in. Copper PEX-A Barb Stub-Out 90 degree Elbow with Flange provides ultimate stability for stub-outs for stop valve connections to plumbing fixtures. The integrated mounting flange allows for the simple and secure installation of stub outs. The ApolloPEX 8 in. x 1/2 in. Copper PEX-A Barb Stub-Out 90 degree Elbow with Flange, secured to studs, floor joists, ceiling joists or any number of structural components, is an extremely versatile product. 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. Features: Larger internal diameter of Apollo ExpansionPEX fittings results in a 25% greater flow rate within the system Constructed of high quality copper for superior reliability and strength Cold-expansion tool (sold separately) is required for installation Meets or exceeds ASTM F1960 standard Meets UPC, IPC and cUPC standard Must secured in place using Apollo ExpansionPEX sleeves or other PEX-A expansion sleeves/rings NSF listed Rated to 200 degree F and 200 psi Item is not compatible with PEXb pipe, crimp-style (ASTM 1807) or pinch clamp (ASTM F2098) piping systems