Bell® standard inner tubes are made from mold-cured rubber to ensure even sidewalls and help prevent high-pressure blowouts. They are built for durability and dependable performance. Each tube is carefully tested for quality, giving riders confidence on every trip. Available in a wide range of popular sizes, these tubes are designed to fit many different bikes. This model features a 35mm Schrader valve with a cap and works especially well for road bike tires.