The Roll-N-Lock A-SERIES XT (TM) combines the all-aluminum A-Series retractable truck bed cover with our T-slot integrated MaxTrak System that allows for unique customization to your truck bed to meet your individual needs. The Roll-N-Lock A-XT provides you effortless full bed convenience while not missing the mark on impeccable security. The robust, aluminum topper features a patented hinge system for frictionless and easy operation. With the turn of the lever and key, the A-XT truck bed cover smoothly slides open and retracts into a compact canister giving you instant access to your entire truck bed. With different locking points along the bed rail, hauling taller cargo with a truck bed cover has never been easier. This retractable cover is constructed as a single piece with hidden seals to keep water out of your truck bed and your cargo protected from the elements. The A-Series XT not only provides you with unmatched security and protection from the elements, but this retractable truck bed cover also has an added level of wear and tear protection with its durable powder coating applied over the aluminum body. Quick and fast install, and backed by a 3-year warranty. A-Series XT Locking Retractable Truck Bed Cover for 2019 (New Body Style)-2024 Chevy Silverado/GMC Sierra 1500 6' 7" Bed without CarbonPro Bed A-Series XT Tonneau Cover 2019-2024 Chevrolet Silverado 1500 79.4 Bed, 2019-2024 GMC Sierra 1500 79.4 Bed