Pool adapter size: adapter for pool accessories is suitable for all 4000, 2500, 2000 and 1500 GPH filter pumps with threaded hose connections. It can improve the circulation and filtration of the water in your pool and provide you with crystal clear water. Easy to install: the pool hose adapter is used to connect a 1.25 inch hose to a piston valve or filter pump. The small end is connected to the 1.25 inch hose. The threaded end is connected to a 1.5 inch piston valve or filter pump and simply screwed on. High-quality materials: the pool hose 38 mm is made of - plastic, which is strong and . The rubber ring fits exactly into the 1.25 inch hose, creating a sealed space that prevents leaks. This replacement part ensures that your pool is safe and works properly. Wide range of applications: hose for filter systems, submersible pumps, pool pumps, filter pumps, sand filter systems or shut-off valves. We recommend using hose clamps in the place where the hose meets the outlet to avoid leakage. It is the perfect choice for pool connection sets., Manufacturer: CTRLZS