1、Aluminum 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. 2、Wheel 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. 3、Main Features: The explosion proof solid tire is made of natural rubber, and the design of the inner special shape and hollow structure greatly improves the cushion flexibility of the tire. With rubber grooves on the surface, it provides excellent grip and is handy in various complex road conditions. 4、High Performance: The tire can be stretched, but it will always return to its shape, and its cushioning can change according to pressure and temperature. The small holes distributed on the tire surface also make it more flexible to deal with various road conditions. It also has a better shock absorbing effect while ensuring durability, puncture resistant and explosion proof features, and greatly enhances the comfort of use. 5、Applicable Models: The rear wheel assembly with explosion proof solid tire and wheel hub is suitable for Xiaomi M365 PRO, PRO 2 electric scooters, used for repair and replacement of the rear wheel of the electric scooter. Item Type: 8.5 Inch Solid Tire Wheel Hub Set Material: Aluminum Alloy + Rubber Product Color: As Pictures Shown Tire Outer Diameter: Approx. 22cm / 8.7in Total 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 / 6.7in Wheel Hub Width: Approx. 4.5cm / 1.8in Product Weight: Approx. 1385g / 48.9oz Maximum Load: Approx. 100kg / 220lbs Applicable Models: Suitable for Xiaomi M365 PRO, PRO 2 electric scooters 1 x Rear Wheel Assembly (Tire + Wheel Hub)