You are Buying a brand New And Factory Sealed Apollo 3/4 in. Brass PEX-B Coupling Pro Pack (25-Pack) Model # APXC3425JR.... 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. Constructed of lead free dezincification resistant (DZR) brass for superior reliability and strength Most economical piping system available Compatible with PEX pipe Meets UPC, IPC and cUPC standard Can secured in place using copper crimps, stainless steel pinch clamps or stainless steel crimp sleeves NSF listed Barb x barb connection for PEX plumbing systems Maximum working pressure of 200 psi and maximum temperature of 200 degree F....