SharkBite U520LFA End Cap Plumbing Fitting, 1 Inch, PEX Fittings, Push-to-Connect, Coupler, Copper, CPVC INSTALLS IN SECONDS: 1 inch end cap requires no special tools, no soldering, no crimping or glue. Just push to create a watertight seal COPPER, PEX, CPVC: Cap off Copper, PEX, CPVC, or PE-RT pipe lines. Great for stub outs and pressure testing a home as they take no time to cure. COMPATIBLE PRODUCT: Same as part number U520LFZ and U520LF QUALITY: Only SharkBites quality and performance is field-proven with more than 550 million connections. SharkBite is the only push-to-connect brand that can ensure a clean, leak-free connection CERTIFIED: SharkBite fittings are certified to 200 PSI and 200F and can be reused up to four times