describe > [Conversion Adapter]Swimming pool hose adapter is used for salt water system of 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 filter pump, the A Adapter is the perfect solution. > [High Quality Material] The pool parts are made of high quality plastic material, which is strong and durable. The rubber ring is tightly connected with the 1.25-inch pipe to form a sealing gap to prevent water leakage. > [Easy to Install]Hose Adapter A is designed to connect 1.25 inch hose with piston valve or filter pump. The small end connects to the 1.25 pipe. The threaded end connects to a 1.5 plunger valve or filter pump, just screw on. No need to buy another size hose, saving extra cost. > [Compatible]Adapter, 25007 series. Fits all 4000, 2500, 2000 and 1500 gallon/hour filter pumps with Intex threaded hose connections. > [Hose Connections]Convert threaded hoses to pinch hoses and 1.5 and 1.25 hoses for Intex pool sets. Suitable for Intex chlorine generators and salt systems with threaded hose connections. These A-type adapters work closely with other pool accessories to keep your pool running safely and efficiently. > Quantity: 4 pieces >