The SharkBite copper stub out elbow allows for easy installation during rough-in and immediate pressure testing. Simply cut the bullet and attach the necessary supply stop to finish the installation. The stub out fitting features a green visual indicator which lets you know when PEX tubing is inserted to the proper depth and reduces the risk of installation errors. The stub out elbow is approved for behind-the-wall applications with no access panels, and is composed of copper with a high performance polymer with great chemical and chloramine resistance. Copper stub-out elbow is proudly made in the USA and comes with a 25 year warranty.