LEAD FREE Instant push-fit connection for increased ease-of-use. No soldering, clamps, unions or glue required. Joins copper, CPVC, or PEX pipe in any combination. DZR brass body. Just insert the pipe and the stainless steel teeth bite down and grip tight while a specially formulated O-ring compresses to create a perfect seal. Disassembly is quick and easy with the convenient disconnection clip (sold separately). Fittings certified to 200 PSI and 180F. Design certified and agency listed. Certified to ANSI/NSF-61 product standard for use in potable water systems. Approved to be used underground and behind walls without access panels. Also for use with hydronic heating. Bulk.