Lippert 298707 Electric Stabilizer Jack Kit with Black Waterproof Switch Kit Lippert Components Electric Stabilizer jacks can be mounted to the rear of an RV fifth-wheel or the front and the rear of an RV travel trailer With the provided switch, the jacks lower to the ground to provide extra stabilization for your RV Lippert Components Electric Stabilizer jacks are designed to help eliminate rocking and swaying while jacks are extended Electric stabilizer jacks save time and energy when setting up and tearing down your campsite Patent-pending technology