Double-sided design makes this chock easy to put in place, while a grooved surface helps keep it there. An eyebolt is attached directly into the chock to reduce the chances of it loosening over time; great for use a quick handle, or to secure to a safe point to prevent theft. Use to meet federal regulation Occupational Safety and Health Administration 29 Code of Federal Regulations 1910.178(k)(1): The brakes of highway trucks shall be set and wheel chocks placed under the rear wheels to prevent the trucks from rolling while they are boarded with powered industrial trucks.