the REM Air System Hose by Silver Fish International, LLC is the perfect replacement hose for leading brand air mattresses such as Sleep Number and Select Comfort. This is a relaxed yet heavy duty hose with a leak proof design that will connect to your leading brand pump and mattress for a perfect air tight fit. This product also comes with ONE easy fast hookup connector for quick connection to your pump. Quick-Lock connector is for pump side of the hose ONLY and not for hook up to your air mattress. If your existing pump hoses are permenately connected to your pump the quick lock connector itself will not be compatible to pump. Thus, if needed the quick lock connector can be removed by the user to utilize the hose only. The inside diameter of the hose and connector is 3/8". If you have a system that uses 1/2" inside diameter hoses this product will NOT fit. If you would like t reduce down your existing 1/2" hose to 3/8" ID see our reducing connector: https://www.amazon.com/dp/B0CT2GC7JN?ref=myi_title_dp For air mattress made to fit 3/8" inside diameter hose.