Feature: 1. Butyl rubber inner tube has excellent air tightness, good resistance to cold and heat and aging resistance. 2. It can be used normally for more than 100 days after inflating, and butyl rubber is the most commonly used inner tube material. 3. The butyl rubber tire inner tube can absorb the vibration of uneven roads, thus ensuring comfortable and safe driving. 4. Simple installation, and the old tire inner tube can be easily replaced within a few minutes, which is time‑saving and efficient. 5. Equipped with a Schrader valve, it widly fit 26 inch wheel, width between 1.95‑2.125inch tires. Specification: Item Type: Bicycle Inner Tubes Material: Butyl Rubber Product Color: As Pictures Shown Product Weight: Approx. 221g / 7.8oz Gas Nozzle Type: Long Schrader Valve. Package List: 1 x Bicycle Inner Tube Note: 1. Confirm that the specifications of the inner tube are consistent with the outer tire. Each inner tube is equipped with a valve, nut and rubber cap that can bear the load. When installing the inner tube into the outer tire, please carefully check whether there is sand in the inner space of the outer tire. Whether there are cracks or other undesirable factors.2. Don't pump up too much or too little, as this will cause the valve to separate from the inner tube and cause an accident. Please check whether the air pressure is at a normal level, check the valve nozzle to prevent air leakage, and lock the valve core tightly.