SharkBite 4 Pack 3/4" 90-Degree Brass Elbow. This innovative push-to-connect design allows for quick and easy installation when connecting two pieces of potable water pipe. It connects copper, CPVC, or PEX pipe in any combination with no soldering, clamps, unions, or glue. Simply insert the pipe and the stainless steel teeth bite down and grip tight, while a specially formulated O-ring compresses to create a perfect seal. The disconnect tool allows for fittings and valves to be easily changed and reused. Can be rotated after assembly for easier installation in tight spaces. Certified for potable water supply and hydronic heating applications.