The CURT wheel chock lock is an excellent way to protect an unattended trailer or camper. It is a quick and simple lock to apply, clamping over the wheel and remaining secure until it is unlocked using one the two provided keys. It is also expandable to fit a variety of tire widths. The wheel chock lock can be used on your trailer or automotive vehicle such as a car, truck or even an ATV if needed. For all of your trailer security needs, look to CURT for the lock to keep that boat, RV, toy hauler -- whatever it may be! -- safe and sound., WHEEL CHOCK LOCK (YELLOW POWDER COAT) #23175 Secures unattended trailers, RVs or vehicles by clamping onto the wheel. Chocks and locks the wheel to prevent roll-away. Expandable width fits most tire sizes. Red rubber-coated arms protect the wheel's finish. Protected by a yellow powder coat finish. Includes two keys for added convenience. Limited lifetime warranty (one-year finish, one-year parts).