Tubomart pipe fittings are easy to install without requiring extensive plumbing knowledge. With its full, unrestricted flow, replaceable O-Ring design, and ability to connect to copper, CPVC and PEX, it's no wonder why tubomart is a favorite over competition. Top that off with the industry's longest 50 -Year Warranty and there you have it– Tubomart…one of the best Push Connect Fittings in the world!