Product name:Bike Tire Tube Product size about :700X35C/38C/40C/43C Product color: As shown in the figure Product material:rubber product features: 1. HIGH QUALITY MATERIALS: Our bicycle inner tubes are made from durable and reliable materials, ensuring long-lasting performance and puncture resistance. 2. Multiple size options: Our inner tubes are suitable for 700X35C, 38C, 40C, 43C, 3. American valve: The inner tube uses a 48mm American valve, which is easy to inflate and deflate, and it is convenient to maintain and adjust tire pressure. 4. Smooth Ride: Designed to provide a smooth and comfortable ride, our inner tubes provide excellent shock absorption, reduce vibration and enhance overall stability during your riding 5. Easy to Install: With user-friendly design and clear instructions, our bicycle inner tubes are easy to install, making the tire changing process hassle-free for both beginners and experienced riders alike. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can feel free to contact mewe will give you some suggestion, but it is for you reference only. Shipment includes: 1 pc Bike Tire Tube