11x4. 00-5" Tire. Tire Diameter: 11", Tire Width: 4", Hub Length: 3.4"-4”-4.5”-5” Centered Hub, Bushing size: 3/4" or 5/8”, Rim Diameter: 6", Load Capacity: 330 lbs (150 KG), Not for highway use. EXTRA ADAPTER KIT: 11x4.00-5" flat free tire is pre-assembled with 3.4" centered hub and 3/4" bushing. Comes with two 5/8" bushings, two 1/2" and 1/4" Wide Wheel Nylon Spacers, two steel washes, which can greatly expand its applicability. Our flat free tire is are made of solid, lightweight polyurethane foam, smooth tread. Our Flat Free Tires have the bounce and cushion of an air-filled tire with the benefit of no flats. No tubes; no re-filling with air; non-marking, no more hassle. NOTE: Fits many zero-turn lawnmowers. Please check your existing tire Sidewall for tire, hub and bearing size to ensure proper replacement fit. Please make sure you don’t overload and the tires are not parked or sat for long period of time, otherwise they can develop a flat spot on the tread and your cart will be bumpy. WIDE APPLICATION: This lawn mower tire is widely used on wheelbarrows, garden carts, hand trucks, pressure washers, generators, air compressors, lawn mowers and other types of outdoor power equipment.