Brand New Pool Hose Adapter Type A/B for Intex Pool Hose Adapter with Clamp Washer and 1.5" to 1.25" Hose Adapter w/Collar, Pool Hose Connector for Intex Above Ground Swimming Pool - 4pcs Pool Hose Adapter Type A/B is compatible with Intex2000, 2500, 4000, 1500 GPH filtration pumps, and above ground swimming pool brine systems.Type A Hose Adapter: Converts threaded hoses to clamp style hoses and 1.5 and 1.25-inch hoses for Intex pool sets. Type B Hose Adapter: Type B Hose Adapter converts pools with 1.25" fittings to 1.5" fittings. The inlet/outlet of the general filtration pump is suitable for 1.5-inch or 2-inch hoses, while the inlet/outlet of the above ground swimming pool is generally only suitable for 1.25-inch hoses. Pool Hose adapter kit effectively solves the problem of product mismatch by connecting existing hoses instead of purchasing larger ones. DURABLE MATERIAL: the pool hose adapters are made of high quality plastic material, sturdy and durable, so you don't need to worr