Recommended for transporting plant material, sod, bagged planting supplies, tools and more at your garden center, greenhouse, nursery or job site. 13″ flat-free tires handle the roughest terrain. Injection molded tray. Interchangeable grip handle and tow hitch; carts can be hitched together using an optional Tow Hitch. Features: 5-inch x 13-inch Flat-free tires that handle the roughest terrain; bolted rim wheels; poly tray that’s 30 inches wide, 46 inches long, and 7.5 inches deep. 7.5-inch axle height. 5/8-inch axle diameter.