Usage Tips: Replacement tires are made of rubber material, sturdy and durable. Great replacement accessory for old or broken tires. Inflatable Tire: High puncture resistance, durable against tearing and chunking, convenient to use. Tire inner tube comes with air valve, easy to inflate. Compact size. Size: Outer diameter 22.5cm/8.8inch, inner diameter 16cm/6.3inch, width 7cm/2.7inch Suitable Model: Compatible with Xiaomi for Max G30 and Ninebot Max. (Applicable models: Scooter; Types: 60/70-6.5) Color: Black Material: Rubber Inner tube specifications: 10x2.5 inner tube Package Contents: 1 x Inner tube 1 x Outer tire Only the above package content included; other products not included. Note: Light reflection and different displays may cause slight color variation between item and image. Measurement error allowance is +/- 1-3cm.