Safety is key when working on your automobile, and a wheel chock can be the difference between an accident or completing your task. These wheel chocks will help immobilize wheels on cars, trucks, RV, trailers or anything on wheels.
Changing tires, or working under a car supported with a jack, prevent the vehicle from rocking by wedging a wheel chock on the wheels touching the ground, this help the jack from potentially tipping and the vehicle from falling. Also use with trailers to keep stationary, especially when on a sloped surface.
A unique feature of this wheel chock is the foam pads that add traction when using on smoother surfaces.