Description: Made of engineering material, grooved surface provides an excellent grip, sturdy and durable. 8 1/2x2 (50-134), suitable for electric scooter, for INOKIM Night Series, good for replace the old or damaged tire. Explosion-proof and pressure , 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: Engineering s Color: Black Model: 8 1/2x2 (50-134) Types: Inner, Outer, Inner And Outer Tire outer diameter: About 21cm Tire inner diameter: About 13.4cm Tire width: About 5cm Applicable to: electric scooter Package includes: 1pc x Inner/Outer Tire Or 1pc x Inner Tire+ 1pc Outer Tire Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-2 cm differences due to manual measurement.