Whale quick-connect fittings produce high-integrity, reliable plumbing systems specifically designed for easy installation and re-usability of components.Features:. Whale's semi-rigid polyethylene tubing offers the integrity of metal tubing with the usability of plastic. No collet clips are necessary, thus fittings reduce costs and installation time. Collet has internal support ring ensuring O-ring seal is held in position without leaking. Outer sleeve incorporates collet cover, thus preventing accidental tube release. System is rated at 180 PSI at 68ºF and 90 PSI at 150ºF. Intended for cold and hot water