You are Buying a brand New And Factory Sealed Apollo 3/4 in. Stainless Steel PEX-B Barb Pro Pinch Clamp Pro Pack (100-Pack) Model # PXPRO34100JR 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.