SharkBite 1/2″ Pex Stubout Elbow. It is made of copper. It has a 25-year limited warranty. It is ASTM F876/CSA B137.5, UPC, IPC cUPC Listed, NSF 14 Listed. It is for potable water. It has a maximum pressure of 160 PSI. It has a minimum working temperature of 33 degrees Fahrenheit and a maximum working temperature of 200 degrees Fahrenheit. It comes with a nailing plate to affix to stub to make termination from inside to outside wall for plumbing fixture hook up.