3/8″, disconnect clip, sharkbite push fit fittings, for use with copper tubing cts, cpvc & pex, with integral tube liner included, constructed of dzr brass, certified to 200 psi & 200 degrees fahrenheit, design certified to asse 1061/nsf61 standards, meets upc, ipc & cupc requirements, fitting are listed with iapmo, certified for use on potable & hydronic water distribution, certified for underground applications & as a manufactured joint without the need for access panels.