SharkBite Max 1/2 Inch MNPT Adapter, Push to Connect Brass Plumbing Fitting, PEX Pipe, Copper, CPVC, PE-RT, HDPE, UR120A FAST AND EASY INSTALL: SharkBite Max push-to-connect brass push male adapters are perfect for making easy transitions between CTS pipe to an FNPT threaded connections and quick connections to a PEX, copper, CPVC, PE-RT and SDR-9 HDPE pipe in any combination. No need for soldering, glue, or additional tools; pipe connector can be installed in wet lines NO PEX TUBE LINER: With no PEX pipe tube liner required, SharkBite Max plumbing fittings eliminate flow restriction when used on Copper/CPVC STRONG AND DURABLE: The reinforced stainless steel collar locks in the cartridge and provides additional strength for 50 percent reduction in insertion force LEAD FREE: Flex male adapter is made of high-quality forged DZR brass with reinforced stainless steel that is lead free; all SharkBite pipe fittings meet the same standards for commercial and residential plumbing applications CERTIFIED: Pushfit male adapters are rated to 200 degrees F and 400 PSI with 2K maximum burst