Fits Intex 4000, 2500, 2000, and 1500 gallon per hour filter pumps that use threaded hose connections. Fits A-series adapter for 25007. Converts threaded hoses to clamp-style 1.5 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 in 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, the A adapter is the right solution. Converts 1.5 and 1.25 hoses for Intex pool sets. Converts threaded hoses to clamp-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 \" hose to form a tight seal to prevent water leakage. The pool parts are made of high-quality plastic materials, sturdy and durable. < p>Adapter A will work closely with other pool accessories to ensure safe and efficient operation of your pool. Welcome to order our products, I wish you a happy life!