GatorLock Couplings from Green Leaf are precision-molded in polypropylene and reinforced with fiberglass for additional strength. They are designed to provide enhanced safety with a cam lever locking mechanism that helps reduce the possibility of unintentionally opening the cam levers during use, which could result in personal injury and costly spills. They are made to industry standard and will interchange with all cam lever coupler brands and materials made to universal specifications. Sizes range from 1/2 to 3 inches, with a maximum operating pressure to 125 degrees F. They are available in B, C, D and CAP series. 800-654-9808; www.green-leaf.us.