Otoolling 60-Pack 1/2" PEX A Expansion Fittings Kit PPSU, F1960 Plumbing Fittings with Elbow Tee Coupling, Lead-Free NSF cUPC Certified, for PEX-A Pipe Expansion System

["Astm F1960 Certified: meets ASTM F1960 and NSF standards; Designed for PEX-A expansion systems, ensuring tight, secure, and leak-free connections that become stronger over time, reliable for long-term plumbing use","Ppsu Material: made of PPSU, lead-free and corrosion-resistant, withstands high pressure and temperature changes, resists rust, scale, and freeze damage, ensuring long-lasting durability","Full Compatibility: seamlessly compatible with all other PEX-A expansion rings/tubing; Note: requires expansion tool for installation; Not for crimp/clamp systems","Reliable Reducing Connections: 1/2\" PEX-A expansion couplings, perfect for residential plumbing, including hot and cold water lines, radiant floor heating, and underground installations; Smooth inner walls help maintain strong water flow and reduce pressure loss(tools not included)","Wide Application: ideal for hot and cold water systems, radiant floor heating, retrofit projects, and underground use, smooth inner surface improves water flow and reduces pressure loss"]