This Bell Self-Seal Inner Tube is perfect for your 24 inch bicycle. With a Schrader Valve and a tube size of 1.75-2.25, it is compatible with a variety of bikes. The valve length is 32mm and the tube is made of durable rubber material. This unit includes one tube and a stem. The black color is sleek and matches with any bike design. It is manufactured in China and does not come with any manufacturer warranty. Add this reliable tube to your cycling gear today.