Universal Fit Flat Free Hand Truck/Utility Tire 10" - 2PC Set - National Standard Products&reg; Flat Free Tire made of solid polyurethane foam. Non-marking. Ribbed Tread. 600 lb load capacity. Not for highway use. 4.10/3.5-4. 5/8" diameter bore Lawn & Garden Carts, Hand Trucks, Air Compressors, Pressure Washers, Tool Box... National Standard Products