New ONEstep tandem axle wheel chock is the fastest and easiest way to stabilize your trailer. Sets and removes in seconds. Once set, the ONEstep can be padlocked in place to help detour theft. Step on the arms to lock the chock into place and pull up on the cable for easy removal little or no bending to set and remove! ONEstep chock adjusts easily from 16" to 24". Great for Travel Trailers, 5th Wheels, Boats, Cargo, and Horse Trailers. Powder coated arms and zinc plated wedges gives a durable finish that will look great for years. Priced each.