Marathon 4.10/3.50-4" Flat Free, Hand Truck / All-Purpose Utility Tire on Wheel, 2.25" Offset Hub, 3/4" Bearings 4.10/3.50-4" (10.5" diameter) with a 2.25" offset hub and 3/4" ball bearings. This tire and wheel assembly is commonly used on air compressors, hand trucks (dollies), generators, pressure washers and other utility equipment. Comes pre-mounted on a solid steel, silver wheel for quick and easy installation. Has the same feel and handling of an air-filled tire, but guaranteed to never go flat. Features a load capacity of 250 pounds and a sawtooth tread for the perfect balance of traction and maneuverability.