Marathon 4.10/3.50-4" Pneumatic (Air Filled) Hand Truck / All Purpose Utility Tire on Wheel, 2.25" Offset Hub, 5/8" Bearings 4.10/3.50-4" (10.2" diameter) with a 2.25" offset hub and 5/8" 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, gray wheel for quick and easy installation. Tube type design makes fixing a flat as simple as installing and inflating a new inner tube, instead of replacing the whole assembly. Features a load capacity of 300 pounds and a sawtooth tread for the perfect balance of traction and maneuverability.