Made of naturalrubber material grooved surface provides an excellent grip sturdy and durable.8 1/2x2 (50-134) suitable for electric scooter for Night Series good for replace the old or damaged tire.Explosion-proof and pressure resistant resistant to abrasion you can be used in snowy and rainy days offers maximum security for you.The elastic design of the tire has been studied to allow flexibility. the tire can be stretched but it will always return to its shape.Simple to install and detach adjusted flexibly and fixed tightly.Specification:Material:NaturalRubberColor: BlackModel: 8 1/2x2 (50-134)Types: Inner Outer Inner And OuterInner Tire:When inflated width about3.5cm-6cm/1.38-2.36inch inner diameter about 13cm-14.5cm/5.12-5.71inch outer diameter about19-23cm/7.48-9.06inch(The degree of inflation is determined according to your needs it is recommended not to inflate too much)OuterTire:tire width about5.5cm/2.17inch inner diameter about13.4cm/5.28inch outer diameter about 21.59cm/8.5inchThe model is 8 1/2*2 (50-134) not fit for Xiaomi electric cars.Mainly suitable for children& 039;s electric scooters please confirm the size of your electric scooter before purchasing.Package includes:1pc x Inner/Outer TireOr 1pc x Inner Tire+ 1pc Outer TireNote:1.Not fit for Xiaomi 365 electric scooter please confirm the size you need before buying.2. Due to the light and screen difference the item& 039;s color may be slightly different from the pictures.3. Please allow 1-2 cm differences due to manual measurement.