Optimal Compatibility: Perfectly designed to fit Etwow electric scooters and baby carriages, this 12-inch inner tube and tire set ensures a smooth ride and performance. The dimensions 310x50-210 are tailored for precise fitment, enhancing safety and reliability. High-Quality Material: Made from premium rubber, our replacement tires offer exceptional durability and resistance to abrasion, providing long-lasting use and continuous comfort. Ideal for daily commuting or leisurely strolls with your baby carriage. Easy Installation: This tire and inner tube set is designed for quick and easy installation, allowing you to replace your old or worn-out tires without professional help. Get back on road with minimal downtime! Versatile Use: Not only perfect for electric scooters and baby carriages, but also suitable for other vehicles requiring same tire size. A versatile choice for mobility needs. Color:As Shown Material:Rubber Package Contents: 1 * 12-Inch Inner Tube 1 * 12-Inch Tire Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.