Features: Make of TPU materials, it have good wear resistance and durability, and can effectively resist the puncture and air leakage of external objects, maintaining a good inflation condition. The inner tube adopts a Light Weight design, reducing the weight of the entire vehicle and improving the flexibility and speed of cycling. Specially designs for road bicycles, it perfectly matchs wheel size to ensure a stable Cycling experience. Suitable for professional bicycles maintenance personnel and bicycles enthusiasts, it can used as accessory to replace or repair the inner tube of road bicycles. We offer 3 different lengths of nozzles: 45mm, 65mm, and 85mm, which is suitable for most wheel rims height. You can choose the appropriate inner tube according to the needs of the bicycles. Specifications: Materials: TPU Weight: 19g/28g Nozzle length: 45mm(1.77inch)/65mm(2.56inch)/85mm(3.35inch) Package Includes: 1Pc Bike Inner Tube note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.