Save both time and money with reliable, bulletproof solid polyurethane tires. Flat-free tires keep your equipment rolling over the toughest conditions any jobsite can throw at you, eliminating costly and inconvenient flat tires. These flat-free tires are non-marking and have the bounce and feel of pneumatic tires without ever getting flat. Blue color helps easily identify your trouble-free, flat-free portable equipment. Load handling characteristics are similar to air-filled tires, except now troublesome flat tires are a thing of the past. This is the perfect replacement tire for residential wheelbarrows and carts - performs like an air tire with NO FLATS Lightweight, solid polyurethane tire is mounted onto a heavy-duty 8in. steel rim, with 6in. symmetrical hub, 3/4in. bearings and grease fitting. Hub Width in. 6, Rim Size in. 8, Rim Included Yes, Tire Size 15.5 in. x 4.80/4.00-8, Load Capacity lbs. 450, Grease Fittings Yes, Bearings Included Yes, Bore Diameter in. 3/4, Outside Diameter in. 15.5, Tire Type Flat free, Tread Type Ribbed.