Extang Express Tool Box Roll-up Truck Bed Tonneau Cover | 60645 | fits Chevy/GMC Silverado/Sierra (5 ft 8 in) 07-13 works with/without track system Easily Bridges The Toolbox To Tonneau Gap L-Channel design also provides for rain drainage Fits Most Standard 20 in. Tool Boxes Instant Truck Bed Protection With Top-Notch Looks And Performance Most Convenient And Easy To Roll Up Style