"Ideal for hand trucks, platform trucks and other industrial equipment where flat-free performance is mandatory. A good replacement for semi-pneumatic wheels. Sold individually. Tread Type Ribbed, Bore Diameter in. 5/8, Outside Diameter in. 8, Rim Included Yes, Hub Width in. 2 1/4 centered, Load Capacity lbs. 450, Bearings Included Yes, Tire Type Solid rubber, Tire Size 8 x 2.50. Wide-tread ribbed solid rubber tire is mounted on a rugged polypropylene ball bearing wheel Puncture-proof tire provides a smooth, quiet ride with low starting effort on uneven floors"