6 pack, 1/2" push-to-connect evopex plastic end stop fitting, high performance polymer with chemical & chloramine resistance, no tools, no calibration, no rings for error proof installation, visual indicator for assurance of proper fitting connection, easy install with minimal learning curve for new laborers, no potential for leaks caused by nicks on the fitting exterior, max temperature 200 degrees fahrenheit, max pressure 160 psi, listed by lapmo & design certified & listed to assemble 1061, nsf-61, meets all upc, lpc & cupc requirements, no de-mount clip required, sharkbite evopex fittings are not meant to be removed once installed.