Lund 260104008 Black Steel 5" Oval Wheel-to-Wheel Nerf Bars for 1999-2013 Silverado/Sierra 1500, 1999-2004 Silverado/Sierra 2500, 2001-2006 Silverado 3500, 2001-2014 Silverado/Sierra 2500HD, 2007-2014 Silverado/Sierra 3500HD Extended Cab Wheel-to-wheel bars provide an extra step at the rear of the bar for easy access to the front of the truck bed, tool boxes or ladder racks; 5 Oval step provides extra-wide stepping surface Rugged and durable black powder coated steel is corrosion resistant Non-slip, flat step pads provide traction for safe footing Solid construction supports up to 350 pounds Pre-assembled for easy no-drill installation with all mounting hardware included