U-drive 4" inch Oval Stainless Steel side step Nerf Bar Running Boards for 07-14 Silverado/Sierra Crew Cab (Means with 2 full size front doors and 2 full size rear doors) Only fit 2007-2014 Silverado/Sierra Crew Cab (Means with 2 full size front doors and 2 full size rear doors) 4" Inch Oval Style Stainless Steel Tube + Slip-Resistant Plastic Step Pads Made from heavy duty T304 Stainless Steel Direct Bolt-On in Assembling Finished Surface is Mirror Polished, Shiny Chrome Color