Conversion Adapter: Pool hose adapter for use in salt water systems for above ground pools. If you only have 1.25 inch hose but want to install a 1.5 inch piston valve or upgrade to a more powerful filter pump, this one is the perfect solution. Compatible Pair of Series A adapters, 25007. Fits all 4000, 2500, 2000 and 1500 gph filter pumps using Intex threaded hose fittings. High Quality MaterialPool parts are manufactured Made of high quality plastic material, strong and durable. The rubber ring is closely connected with the 1.25 inch hose to form a sealed space to prevent water leakage. Easy to install The hose adapter is designed to connect 1.25 inch hose to a piston valve or filter pump. The small end connects to the 1.25 inch hose. The threaded end connects to a 1.5" piston valve or filter pump and simply tightens. No need to purchase additional pipe sizes and avoid additional costs. PIPE CONNECTION Convert threaded pipe to clamp pipe as well as 1.5 inch and 1.25 pipe thumb for Intex pool kit. Suitable for Intex chlorine generators and salt systems with threaded pipe connections. These A-Adapters work closely with other pool accessories to ensure safe and efficient pool operation. Note: The data is all manually measured, please allow 1-3 error cm Due to differences in light and display, there may be color differences, please refer to the actual item received.