These manually retractable bed covers use a sealed ball-bearing roller system for easy one-handed operation. They are key lockable in any position along the rail providing nearly unlimited flexibility.Heavy-duty aluminum constructionSpiral track system keeps cover from coming in contact with itself as it rolls into the compact storage containerAttractive low-profile designConvenient pup-up handle – no need for strapsDurable matte-black finish with Ford Oval badgeEasy to install, no drilling required