Shepherd Hardware 3355E 8-Inch Semi-Pneumatic Rubber Tire, Steel Hub with Ball Bearings, Gear Tread, 1/2-Inch Offset Axle Diameter 5-inch diameter steel rim 1-1/2-inch offset hub, ball bearings and 1/2-inch bore 1-3/4-inch wide X 8-inch diameter semi-pneumatic tire with gear tread 55-lb load capacity These tires are ideal for hand trucks, lawnmowers, utility carts, and other lawn and garden equipment Semi-pneumatic tires are light weight, puncture proof, and provide cushioning. They are designed to not pull away from their rim under use.