The cargo in your rooftop carrier is comfortably within reach with the help of this portable wheel step. Supporting up to 220 lbs, the wheel step fits over your car or light truck tire. Designed to work with most car and light truck tires, it adjusts to three different heights and folds flat for storing under a seat between uses. The step includes vertical supports and a non-slip stepping surface that gives you the grip you need to safely adjust loads, install roof bars or racks and unload cargo. Please ensure the portable wheel step is removed before driving the vehicle.