Quick-disconnect couplings provide fast, positive, leak proof connections for hose and pipe without threading, tools, and strain. For strength and durability they are made of a glass fill polypropylene and they have stainless steel rings, arms and pins. Gaskets are EPDM. Couplings are precision molded to insure uniform accurate fit. They operate smoothly with finger rings that are designed for easy opening of cam levers. Temperature is range is 0 to 150° F and the maximum pressure rating is 75 PSI.