Push fittings are the fastest, easiest way to join copper, CTS, CPVC, and Pex in any combination, no soldering or glue. Certified to 200 P.S.I. and 200 deg. F. Use for new installation and repair of potable water distribution systems. 1/2" x 3/4" F. Low lead. Manufactured to include no more than 0.25% weighted average lead content on wetted surfaces.