Specifications: The bicycle inner tube is made from high-quality rubber. It has better sealing performance, ozone resistance, anti-aging, shock absorption and electrical insulation properties. The replacement rubber tire tube can absorb the impact of crashing on the road surface, which is comfortable and safe. It is heat-resistant, wear-resistant, and it is suitable for daily use. You can install it easily. Replace the old tire tube in a few minutes, saving time and effort. Item Name: Bike Inner Tube Material: Rubber Features: American Type, Wear-resistant, Easy to Install Size: 12"/14"/16"/18"/20"/22"/24"/26" x 1.75/2.125 Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 2 x Bike Inner Tubes 2 x Tyre Levels