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. 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. For air mattress made to fit 3/8" inside diameter hose. This listing is for one hose.