SharkBite's large diameter end caps are push-to-connect and are the easiest way to cap off your Copper, PEX, CPVC, or PE-RT pipe lines. There is no soldering, clamps, unions or glue required. These fittings are great for stub outs and pressure testing a home as they take no time to cure. They are easily removed with a Demount Clip and are reusable as well. All SharkBite fittings are capable of being installed on either wet or dry pipe. This product is rated for up to 200 PSI and 200 deg F. Large Diameter PEX Stiffeners are required when connecting to PEX tubing.