The 1/2" Stainless Steel Surlok PEX Barb Pinch Clamp (50 pack) is simple to install and is designed for use with PEX pipe and barb fittings (not included). Made from corrosion resistant stainless for durability. Requires a pinch clamp tool (sold separately). Surlok PEX fasteners are a key component of the most economical potable water piping systems. Also capable of integration into hydronic heating systems, Surlok PEX fasteners can be can be used with brass and plastic fittings, valves, and manifolds (all sold separately).