The unique, powder-coated aluminum cover body of the Roll-N-Lock? A-Series? Retractable Tonneau Cover is bound together by a patent pending hinge technology that delivers a nearly impenetrable seam. With no exposed rubber seams and a patented tailgate locking system, knife-wielding thieves don?t stand a chance. The A-Series? tonneau cover permits opening or closing in literally seconds, there are no snaps to manipulate or heavy folding panels to lift. A simple rotation of the lock lever and the cover retracts into an ultra-compact housing offering easy and instant access to the entire truck bed.