This Marathon Tires Pneumatic Tire is the perfect replacement or upgrade for existing carts, building new carts or for a variety of other applications. Bearings Included Yes, Rim Type Steel spoke, Outside Diameter in. 24, Tire Type Pneumatic, Load Capacity lbs. 250, Hub Width in. 3.3, Tread Type Aggressive, Tire Size in. 24 x 2.125, Bore Diameter in. 3/4.