Hold up to 250 PSI. 1 piece, no parts to assemble or lose. Quick connect design allows quick & easy connections without the use of installation tools. Great for new installations or plumbing repair projects for pex, Copper, & CPVC pipe. Just cut pipe & push pex, Copper or CPVC tubing into fitting end until tubing seats at stop. 1/2" Quick connect 1 piece, no parts to assemble or lose Quick connect design allows quick & easy connections without the use of installation tools Great for new installations or plumbing repair projects for pex, Copper, & CPVC pipe Just cut pipe & push pex, Copper or CPVC tubing into fitting end until tubing seats at stop Can be disconnected by pulling back on ring & releasing pipe Code approved for behind wall without access & direct in ground burial installations NSF-14, NSF-61, CSA/ASTM & UPC code listed & approved Excellent replacement for qest & flare it type fittings. WARNING: This product can expose you to chemicals including Bisphenol A which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov