Security Trucks are constructed of all-welded 2x2" steel wire grid panels to provide total security and see-through visibility. Optional shelves adjust easily along grid panel using plastic shelf clips (four clips included per shelf). 250-lb. capacity shelves are available in 14-gauge steel or 3/4" layered wood. Includes 3pt locking handle with steel rod locking mechanism - digital security lock option available. Rolls smoothly on 2 swivel and 2 rigid 8" mold-on rubber casters. Durable powder coat finish available in 4 colors. 2,000-lb capacity. Ships assembled - casters, handle, and shelving require minimal assembly. Other optional accessories available: Metal & Wood Shelves, Pegboard & Louvered Panel inserts, Hitch System for towing, Fork Pockets, and 6th Wheel for pinpoint steering.