Features1Aluminum Alloy Hub: The wheel hub is made of aluminum alloy, which is light in weight, strong in bearing capacity, not easy to deform, and good in heat dissipation. 2Wheel Hub Function: The wheel hub is matched with the disc brake with 5 holes, 4cm hole spacing, and 110/120mm diameter, which plays the role of tire support and load bearing. 3Main Features: The pneumatic inner and outer tires are made of high quality rubber material, which has good friction resistance and service life, soft texture and stable production structure. The inner structure of the inflatable inner tube is stable, with strong flexibility, it can fully meet the international standard air pressure. 4Pneumatic Tires: Compared with solid tires, pneumatic tires have good damping properties, allowing you to drive on most roads and give you a comfortable driving experience. 5Applicable Models: The rear wheel assembly with inner tube and hub is suitable for Xiaomi M365 PRO, PRO 2 electric scooters, used for repair and replacement of the rear wheel of the electric scooter.SpecificationItem Type:8.5 Inch Rear Tire with Inner Tube and HubMaterial: Aluminum Alloy + RubberProduct Color: As Pictures ShownTire Specification: 8 1/2 x 2Tire Outer Diameter: Approx. 22cm / 8.7inTotal Length of the Central Axis of the Hub: Approx. 9.8cm / 3.9in (7.8cm / 3.1in in the middle, 1cm / 0.4in on both sides)Wheel Hub Outer Diameter: Approx. 17cm / 6.7inWheel Hub Width: Approx. 4.5cm / 1.8inProduct Weight: Approx. 1220g / 43.0ozTire Valve: Straight ValveMaximum Load: 75kg / 165lbsApplicable Models: Suitable for Xiaomi M365 PRO, PRO 2 Electric ScootersPackage List1 x Rear Wheel Assembly(Inner and Outer Tire + Wheel Hub)