Brass push fitting. UPC, IAPMO, and NSF-61 certified and approved. The fitting can be used with copper, PEX, and CPVC, and is rated at 200 deg. F., 200 PSI. It is made of 1-piece DZR brass. Fittings can be buried and placed behind drywall.Fittings are removeable and reuseable. Product is individually bagged. Manufactured to include no more than 0.25\% weighted average lead content on wetted surfaces.