FAST AND EASY INSTALL: SharkBite Max push-to-connect brass push reducing tee fittings are perfect for making easy connections between two different-sized PEX, copper, CPVC, PE-RT, and SDR-9 HDPE pipes 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 reducing tee 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 reducing tee couplers are rated to 200 degrees F and 250 PSI with 2K maximum burst; approved for underground and behind-the-wall applications with no access panels