Lock down your cargo with the secure and convenient Roll-N-Lock Tonneau Cover. This sturdy retractable tonneau is built with solid vinyl-over-aluminum construction that you can depend on. The compact housing and flush handle provide maximum storage space in your bed while the drainage fittings keep water from building up in the housing unit of your Roll-N-Lock. Built-in tailgate lock keeps your gear secure. Easy clamp-on installation. Add on the Cargo Manager for convenient, moveable cargo control. M-Series features multiple latching positions, finger insulator grip and key-slot cover. The E-Series features remote-control opening and closing as well as an automatic light and emergency release handle. Torsion spring equipped for years of reliability. Unique frictionless construction.