Sure, putting the vehicle in park and setting the emergency brake are supposed to keep it from rolling, but nothing gives you that warm secure feeling while you work under the vehicle like chocking the tires. These portable wheel chocks fold to just 1″ high so you can take them with you in the trunk or under the seat.
You should only use these folding wheel chocks with cars and light trucks; they aren’t designed for larger vehicles. Each heavy-gauge all-steel chock weighs 13oz and is finished with a corrosion-resistant enamel. When extended the chock measures 4″ long by 3-1/2″ wide by 4″ high.
For $7 you can purchase a set of two folding wheel chocks, and buy yourself a little piece of mind for next time you’re under your vehicle on the side of the road.