"Contractor-grade solid microcellular polyurethane tire performs like an air tire, yet never goes flat Lightweight and durable. Mounted on a heavy-duty steel rim with ball bearings and grease fitting. Bearings Included Yes, Rim Size in. 8, Hub Width in. 3, Grease Fittings Yes, Tire Size 4.80/4.00-8, Rim Included Yes, Tread Type Ribbed, Load Capacity lbs. 400, Bore Diameter in. 3/4, Tire Type Microcellular polyurethane."
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