These are strong and durable wheel chocks. They are great for camping. I also use them in combination with the Chock'R dock and Lynx equalizers. Then I don't have to worry about my RV sliding down the mountain because I used an old piece of wood as a stop. These things have a shape and are designed for this type of application. That way you know you can safely store your RVs and trailers without fear of them sliding on you.