SharkBite 3/8 in. PEX Barb x 6 in. Copper Stub-Out 90-Degree Elbow FittingThe SharkBite PEX Barb Connection system is the best option for connecting PEX tubing in water distribution systems when lower material cost is desired. Constructed of copper, the SharkBite stub out elbows are lead free. And with a wide range of fittings, manifolds, regulator, thermostatic, and ball valves available, the SharkBite barb connection system is perfect for your next plumbing project. Copper stub out for durability Used during construction