Marathon Universal Flat- Hand Truck Tire is designed to fit the majority of hand trucks, generators, pressure washers, garden carts, and other small equipment. This tire is made from solid polyurethane foam, ing the bounce and cushion of an air-filled tire with the advantage of going flat. It features a tire size of 4.10/3.50 to 4", with a diameter of 10" and a width of 3.3". The tire comes mounted on a steel rim with a 2.25" offset hub and 5/8" ball bearings. Included is a parts kit containing various spacers and 3/4" bearings to accommodate different hub and axle configurations, making it easy to adapt to your equipment. The tire supports a load capacity of 300 pounds, ensuring reliable performance for your tasks.