This product is commonly found on folding bicycles, electric bicycles, unicycles and children's bicycles. Seamless construction, simple and convenient installation, unmatched performance and value. MADE OF PREMIUM MATERIALS: Our inner and outer tubes are made of high quality, 100% butyl, BPA and odorless rubber, our job is to make reliable and durable inner and outer tubes, made of high quality rubber, durable and wear-resistant, with strong grip and abrasion resistance . Each product has been tested by professionals and can be used with confidence. Features: Inflatable Valve: Bend Weight: 1100 grams Tire size: about 35cm/14inch Tire width: About 5.31cm/2.125inch Combination tire and tube size: 14x2.125 Tube Type and Tire Size: 14x2.125 Package includes: 1 * inner tube and 1 * outer tube, Size: Please check the details and size carefully before purchasing, please allow slight size difference due to different hand measurements. ★【14x2.125 Bike tire Material】: a mixture of natural rubber and butyl rubber. ★【Electric bike tire package 】: 1 * inner tube and 1 * outer tube. Does not include installation instructions. ★【14 inch Bike tire Features】: The tire is made of rubber material, which has wear resistance, anti-skid, high quality and durability, The tires have a unique and thick tread that is perfect for rough riding on different types of surfaces, Made from thick, strong and highly durable butyl rubber, these tubes are the perfect damping material to reduce vibration. ★【Tire electric scooter bike usage】: 100% brand new, high quality, wear-resistant pattern, stable and safe, The tire is easy to use and replace, and can be flexibly adjusted and fixed firmly. ★【Tire After-sales service】: We are so confident in the quality of our products that if you have any product issues we are happy to provide a refund or replacement for your purchase! We are here to support you too If you have any questions or concerns please contact us and we will be happy to help.