Extang Revolution Roll-up Truck Bed Tonneau Cover | 54450 | fits Chevy/GMC Silverado/Sierra 1500 (6 1/2 ft) 2014-18, 2500/3500HD - 2015-18, 2019 Silverado 1500 Legacy & 2019 Sierra 1500 Limited 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