A sleek, low-profile design is the signature of the Lo Pro. Heavy-duty construction and the patented automatic tension control keep the cover looking great in any weather condition. The Lo Pro mounts inside the rails of the truck bed, providing full access to stake pocket holes for use with additional accessories. Stylish design, simple functionality and durable bed protection are what make the Lo Pro North America's #1 selling roll-up truck bed cover. Lo Pro Tonneau Cover-Black-1999-2006 (2007 Classic) Chevy Silverado/GMC Sierra 1500 6ft. 6in. Bed Stepside Drilling Required 1999-2005 Chevrolet Silverado 1500 Stepside 78.0 Bed, 1999-2005 GMC Sierra 1500 Stepside 78.0 Bed