Shepherd Hardware 3337 4.00x6-Inch Pneumatic Wheelbarrow Tire, 13-Inch Tubeless, Ribbed Tread, 3-Inch Centered Hub, 5/8-Inch Axle Diameter, Ball Bearing 6-1/2-inch diameter steel rim with 3-inch centered hub, ball bearings and 5/8-inch bore 3-1/2-inch wide X 13-inch diameter tubeless pneumatic tire with ribbed tread 445-lb load capacity This tire is commonly used on contractor-grade wheelbarrows, garden trailers, roofing equipment, spreaders, and more These pneumatic wheelbarrow tires feature heavy duty ball bearings, and can handle rough terrain to help with the toughest outdoor projects