Fits Intex 4000, 2500, 2000, and 1500 gallon per hour filter pumps that use threaded hose fittings. Fits the A-Series Adapter for 25007. Converts threaded hoses to clamp-style 1.5-inch and 1.25-inch hoses for Intex pool sets. The A-Adapter will work closely with other pool fittings to keep your pool running safely and efficiently. This pool hose adapter is used for the saltwater system of the above-ground pool. If you only have a 1.25-inch hose, but want to install a 1.5-inch plunger valve or upgrade to a more powerful filter pump, Adapter A will be the right solution. Converts 1.5 and 1.25 hoses for Intex pool kits. Converts threaded hoses to collar-style hoses. Fits Intex 4000, 2500, 2000, and 1500 gallon per hour filter pumps that use threaded hose connections. Fits Intex chlorine generators and salt systems that use threaded hose connections. The rubber ring fits tightly with the 1.25-inch hose to form a tight seal to prevent water leaks. The pool parts are made of high-quality