Update your semi truck with the ability to seamlessly lock trailers, vehicles, and RVs in place, with the Power Products 12 Lb Wheel Chock that ensures you're Ready for the Road Ahead. With this replacement tool, operators can easily prevent vehicle movement on slopes or inclines, eliminating the possibility of a runaway truck or trailer. Manufactured with a pyramid-shaped design to lock both front and back tires in place. FleetPride is your First Click in Heavy Duty.