The Pace Edwards Elevated Truck Rack brings extra versatility to your truck bed by providing a simple way to haul larger cargo with your UltraGroove line of truck bed covers. The four high towers simply slide into the built-in RES rail expansion system for fast and easy, drill-free installation. It has never been easier to carry bulky cargo while keeping your bed secured with your UltraGroove, UltraGroove Electric, or UltraGroove Metal tonneau covers.