Features: 1Butyl Rubber: Made of butyl rubber with the advantages of better sealing performance, ozone resistance, anti aging, shock absorption and electrical insulation, and durable for long term use. 2High Performance: Rubber inner tube can absorb the impact of jolty road, making the ride comfortable and safe. Heat and wear resistant can stand the use and tear of daily use. 3Simple Operation: Quick and easy to install. Use the equipped tire lever to pry open the outer pipe and remove the old inner tire tube. Align the air nozzle of the new inner tube with the air nozzle of the steel ring, place the inner tube, inflate and arrange the outer tube, all is done. 4Self Adhesive Patches: Self adhesive patches included in the package can stick on the tire tube without any glue, much easier and quicker to repair. 5Package Content: You can receive 2 inner tire tube, 2 tire levers, 1 rasp, and 1 sheet with 6 round patches, providing a satisfying using experience. 6Application Range: You can choose the proper item inner tube based on the wheel diameter and width of your bike, suitable width is between 1.75?2.125in, the diameter range is 14?26in. Package included: 2 x Inner Tire Tube 2 x Tire Levers 1 x Rasp 1 x Round Patches(6 Pcs)