3/4" x 3/4", female iron pipe x 18", stainless steel, lead free, flexible water heater connector, sharkbite push fit fittings for use with copper tubing copper tube size, cpvc & pex with integral tube liner included, constructed of dzr brass, certified to 200 psi & 200 degrees Fahrenheit, design certified to asni 1061/nsf61 standards, meets upc, ipc & cupc requirements, fittings are listed with lapmo & are certified for use on potable & hydronic water distribution, certified for underground applications & as a manufactured joint without the need for access panel, lead free compliant to federal law 111-380.