Buyers Products Rubber Wheel Chock Set fits snugly under wheels to keep vehicles in place while they are serviced or parked. They are attached together with a 3 ft nylon rope for easy retrieval and placement. The wheel chock set is also ideal for ground support equipment or construction. Each side has a stripe of bright yellow reflective tape for improved visibility. The wheel chocks are constructed from ribbed rubber and are rust and chemical-proof.