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 Features: The wheel hub is matched with the disc brake with 5 holes, 4cm hole spacing, and 120mm diameter, which supports the tire and load bearing. 3、Tire 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 restore its shape. Its cushioning can restore according to pressure and temperature changes. Its small holes also make it more flexible and calm to deal with various road conditions ensuring durability, puncture resistance, explosion protection, etc. Under the characteristics, it also has a better shock absorbing effect, which greatly improves the comfort of the user. 5、Applicable Models: The 8.5 Inch solid tire wheel hub set with 120mm disc brake 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 with 120mm Disc Brake Material: Aluminum Alloy + Rubber + Stainless Steel 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. 1495g / 52.7oz Maximum Load: Approx. 100kg / 220lbs Applicable Models: Suitable for Xiaomi M365 PRO, PRO 2 electric scooters 1 x Rear Wheel Assembly (Tire + Wheel Hub +Disc Brake)