Converts AdapterThe swimming pool hose adapter is used for the salt water system of an above ground swimming pool. If you only have 1.25" hose but want to install a 1.5" piston valve or upgrade to a more powerful filtration pump, Adapter A is the perfect solution. Compatible withA Series Adapter Pair, 25007. Fits all 4000, 2500, 2000 and 1500 gallon per hour filter pumps that use threaded hose fittings for Intex. Premium MaterialThe swimming pool parts are made of high quality plastic materials, sturdy and durable. The rubber ring is closely connected with the 1.25 inch pipe to form a sealed space to prevent water leakage. Easy to install A pipe adapters are designed to connect 1.25 inch pipes with piston valves or filter pump. The small end attaches to 1.25 inch pipe. Threaded end attaches to 1.5" piston valves or filter pumps, just screw on. No need to purchase other size hoses, avoid extra costs. Hose ConnectionsConverts threaded hoses to clamp hoses and 1.5" and 1.25" hoses for Intex pool sets. Fits Intex chlorine generators and salt systems that use hose fittings threaded. These Type A adapters work closely with other pool accessories to ensure the safe and efficient operation of your pool.