Sturdy and Durable: 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 22.5 cm / 8.8 inches, inner diameter 16 cm / 6.3 inches, width 7 cm / 2.7 inches Compatible Models: Compatible with M-i, MaxG30, Ninebot Max. (Applicable models: Scooter; Type: 60/70-6.5) Color: Black Material: Rubber Package Contents: 1 x Inner Tube 1 x Outer Tube Note: The package includes only the items listed above. Other products are not included. Note: Light and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.