SmartClick™ Push Fittings by Legend are pipe connectors that can be used on PE-RT and PEX piping. They are designed for permanent installation in commercial and residential applications. To install a SmartClick fitting, simply cut the piping square, and push the tubing into the SmartClick connector until it stops and you hear an audible click. No tools needed. The major body components of the units are constructed of polyphenylsulfone (PPSU). The wedge and clamp are made of spring steel. These fittings are time saving, easy to use, permanent, and reliable. All SmartClick fittings are third party certified: ASSE 1061, ANSI/NSF 61 and ANSI/NSF 14. We carry a variety of different types and sizes of SmartClick fittings.