Simplify your plumbing projects with the SharkBite brass crimp reducing coupling. Made from lead-free DZR brass, this brass crimp reducing connector is corrosion free and is perfect for connecting two different-sized PEX pipes together using copper crimp rings or stainless steel clamps. These brass crimp couplers are compatible with PEX and PE-RT pipes. SharkBite brass fittings feature a minimum working temperature of 33 degrees F at 160 PSI and a maximum working temperature of 200 degrees F at 80 PSI. These crimp reducing connectors are certified for use in potable water and hydronic heating system applications.