Item Type: 2.504 Tire and Inner Tube SetMaterial: RubberProduct Color: As Pictures Shown Tire Specification: 2.504 Outer Diameter: Approx. 21cm / 8.3inInner Diameter: Approx. 10cm / 3.9inProduct Weight: Approx. 660g / 23.3oz .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1Butyl Rubber: Using thick butyl rubber, the tires feature better sealing performance, ozone resistance, anti aging, shock absorption and electrical insulation, and is durable. 2Comfort and Safe: Adopting the combination of tire and inner tube, the inner tube has a good explosion proof effect, which not only adds comfort to your riding, but also ensures your safety. 3Anti Slip Pattern: The wear resistant and anti skid pattern on the surface is beneficial to cut off the water film and airflow, improve the control performance of the wetland, and reduce noise at the same time. 4Perfect Replacement: Easy to use and replace, flexible adjustment and firm connection, the tire and inner tube set is a great accessories for replacing the worn or old parts. 5Applicable Models: The 2.504 tire and inner tube set is suitable for hand truck, utility cart, lawn mowers, scooters and electric wheelchairs.