Repair copper pipe easily. 1 end of coupling does not have a stop, which allows you to slide coupling on to pipe and then slide back to cover where pipe is cut out. Brass push fitting. UPC, IAPMO, and NSF-61 certified and approved. The fitting should be used with copper only and is rated at 200 F., 200 P.S.I. It is made of 1-piece DZR brass. Fittings can be buried and placed behind drywall. Fittings are removable and reuseable. Product is individually bagged. Manufactured to include no more than 0.25% weighted average lead content on wetted surfaces.