Specifications: The bicycle inner tube is made from high-quality rubber. It offers improved sealing performance, ozone resistance, anti-aging properties, shock absorption, and electrical insulation. This replacement rubber tire tube helps absorb impact from road surfaces, providing a comfortable and safe ride. It is heat-resistant and wear-resistant, making it suitable for daily use. Easy to install. Replace your old tire tube in 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 differences in lighting and screen settings, the item's color may vary slightly from the images. Please allow slight dimensional differences due to manual measurement. Package Includes: 2 x Bike Inner Tubes 2 x Tire Levers