This Replacement Hose Adapter with Collars,Keep your pump running at top efficiency .so you know it will keep your pool safe and working properly. This adapter converts threaded hoses to clamp style hoses and 1.5 and 1.25 hoses fit for Intex pool sets. <br>work with：<br>Fits all 4000, 2500, 2000 and 1500 gallon per hour filter pumps that use threaded hose connections<br>Fits chlorine generators and salt systems that use threaded hose connections