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. Grease Fittings Yes, Hub Width in. 3, Load Capacity lbs. 400, Bearings Included Yes, Tread Type Ribbed, Rim Included Yes, Bore Diameter in. 3/4, Rim Size in. 8, Tire Size 4.80/4.00-8, Tire Type Microcellular polyurethane.
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