This low-profile, spring-action retractable tonneau cover is built with heavy-gauge aluminum in a matte-black powder-coated finish. The exclusive Continuous Tension Spring (CTS) opens the cover automatically when the keyed lock system is engaged. No-drill, clamp-in design for easy installation. Durable, matte black powder-coated finish over heavy-gauge aluminum panels with interlocking silicone hinge seals. Exclusive, heavy-duty Continuous Tension Spring (CTS) allows the cover to open automatically when the latch is turned and retract into a contoured canister at the front of the truck bed. Cover closes with a built-in pull strap with a positive lock point at every 12 inches along the rails. Low profile, aerodynamic design is flush with the truck rails for improved fuel economy and a sleek OEM appearance. Industry leading, innovative, mounting hardware with leveling arms maintain the rail position for smoothly aligned operation. Recessed U-channel rail interiors act as built-in rain gutters, channeling water toward the front of the vehicle. Independent latch and keyed lock system. Full rear visibility while driving with the cover opened or closed. Fits over most fifth wheel and gooseneck trailer hitches. (Highest point on hitch must be 2 inch below the bed rails. Made in the USA Ultimate Lifetime Warranty