Brass Push Fit x MPT (male pipe thread) adapter. Forged DZR (Dezincification) brass. Fast, trouble-free installation of copper, CPVC (Chlorinated Polyvinyl Chloride), and PEX (cross-linked polyethylene) tubing.Certified cUPC (all Canadian federal requirements and standards), NSF (National Sanitation Foundation)/ANSI 61 (American National Standards Institute), AB 1953 (California’s Assembly Bill 1953) compliant, IAPMO (International Association of Plumbing and Mechanical Officials) listed. Full flow design (no integrated tube liners), removable design, integrated brass seal design. Manufactured to include no more than 0.25% weighted average lead content on wetted surfaces. 25 year warranty.