Extang Revolution Roll-up Truck Bed Tonneau Cover | 54721 | fits Ford Super Duty Short Bed (6 1/2 ft) 08-16 (with optional step gate only) An Incredible Roll Up Tonneau Cover With A Revolutionary Design Automatic Tension Design For Quick Latch And Go Operation Provides A Stylish Near Flush Fit Side Rails Are Pre-Drilled for Quick and Easy Clamp Placement Automoatic Tension System Keeps Tarp Tight And Looking Great