With The 2" Original Patented Roll Back Tie-Down System with Chain Ends from B/A Products Co., you are able to cover your vehicle from all angles, offering superior security that keeps the vehicle fully stabilized throughout transportation. The patented design of these straps effectively immobilizes the wheels, preventing them from moving forward, backward, or from side to side. Designed for carriers with four tie-down points on the bed, the straps are quick to use, easy to use, and are well-used by many industry trainers, vehicle manufacturers, and auto clubs.