High quality inner tube:These 8 1/2x2 tires use high nylon content rubber for greater heat and puncture resistance, as well as more grip. The large tread pattern provides good grip and prevents skidding on smooth surfaces, while the grooves direct the flow of water and prevent skidding. Thickened inner tube:This 8.5x2 scooter's inner tube uses thickened rubber, which not only maintains good air quality, but the thicker inner tube walls also better absorb shock and vibration for a smoother ride. Strong applicability:strong applicability, widely compatible with the same type of tires. The electric scooter rubber tire is compatible with Mijia Xiaomi M365/M365 Pro/1S and other universal inflatable tires. Easy installation:The scooter inner tube 8 1/2 × 2 and tire group is very convenient to replace, as long as the valve direction is correct, at least you can travel thousands of miles without inflation. It can drive smoothly on all kinds of roads, highways, rugged roads, stone roads, sandy roads, uphill surfaces. Note:The replacement tires of this 8.5 "scooter are bent stem, and the outer tires are suitable for 8.5", 81/2x2;50/75-6.1 electric scooter, 8.5 inflated inner tube with bent stem valve.When buying please look for the match, so as not to delay your normal use! We recommend that you watch the installation video on youtube first. Proper installation can help our scooter tires to achieve better performance and ensure your safety during use. Strong applicability:strong applicability, widely compatible with the same type of tires. The electric scooter rubber tire is compatible with Mijia Xiaomi M365/M365 Pro/1S and other universal inflatable tires.