??Applicable Size?Bicycle inner tube fits 20-inch wheels,the tire width is between 1.75 and 2.125 inches,32mm Schrader (conventional) valve/removable inner core-please check the side of the tire or the size on the old inner tube before buying,the valve Whether the type and valve length are appropriate. ??High-quality Materials?Butyl rubber material,excellent puncture resistance,air tightness, strong heat resistance,and durable. ??Easy to install?The tire lever allows you to easily remove the inner tube from the tire when changing the inner tube, which is suitable for most bicycle wheels. ??Intimate Accessories?2 Tire Levers 6 self-adhesive round patches 1 Metal Cleaning Rasp are provided free of charge.In the unfortunate event of a flat tire or air leak,you can change the inner tube or repair the tire anytime and anywhere. ??After-sales Guarantee? If you receive a defective or unsatisfactory product,please contact us directly, we provide free return and exchange services.