The Roll-N-Lock A-Series is an all-aluminum, low-profile, retractable bed cover that is a simple and seamless truck bed cover solution. It 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 Roll-N-Lock A-Series 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 Roll-N-Lock A-Series 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.