XFITTING Push-Fit connection system it's the easiest and fastest way to join copper, CPVC or PEX pipe in any combination – with no soldering, clamps, unions or glue. Just insert the pipe and the stainless steel teeth bite down and grip tight, while a specially formulated O-ring compresses to create a perfect seal. Just push connect by hands, within 1 minutes to finish installation, makes our life more efficient, fast, save time and strength and your money. Disassembly is just as fast using the simple disconnect tool. So fittings and valves can be easily changed and reused. They can even be rotated after assembly for easier installation in tight spaces. Get a grip on your next plumbing project. · Instant Push-Fit connection for increased ease-of-use. · No soldering, clamps, unions, or glue required. · Fits copper tubing, and CTS CPVC and PEX and connects all three types in any combination. · Integral tube liner for PEX installations, so no loose components, ensures secure, reliable connection.