Rugged 8″ pneumatic tires provide durable stability over long distances, rough terrains, and remote locations. Shelves are precision molded from sturdy structural foam plastic. Durable, versatile and resists dents. Shelves feature a 3″ high edge on all four sides to prevent spills and accidents. Angle legs are reinforced with gussets for torque-free extra strength. Integrated handle requires no assembly. Shipped unassembled for freight savings. Assembles easily in minutes.