Lund 26089010 Black Steel 5" Oval Wheel-to-Wheel Nerf Bars for 2007-2018 Chevrolet Silverado/GMC Sierra 1500 Crew Cab with 5.5' Bed; Rocker Panel Mount 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