Feature:1. Rubber Material: Made of high quality rubber material, the internal structure is stable, and has strong flexibility.2. Good Performance: Tire can fully meet the international standard air pressure, has higher safety performance and longer service life than ordinary inner tubes.3. Easy Installation: Very convenient to replace the inner tube, more convenient to disassemble and install with a tire spoon.4. Applicable Tires: The inflatable inner tube is suitable for scooters and bike tires of the same wheel size.5. Specifications: The external tire specifications are 8 1/2x2.0 or 8.5x2.0, and the 10x2.0 tires can use this specification inner tube.Specification:Item Type: Inner TubeMaterial: RubberColor: As Pictures ShownWeight: Approx. 291g/10.3ozTire Specification: 8 1/2x2.0.Package List:2 x Inner Tube2 x Tire Spoon