Mifeier 5" S/s Side Step Nerf Bars Running Boards For 07-16 Silverado/sierra 1500/2500HD/3500HD New Body Double/extended Cab (With 2 Half Size Rear Doors) Fitment 2007-2017 Chevy Silverado/GMC Sierra 1500/2500HD/3500HD New Body Style Extended/Double Cab With 2 Full Size Front Doors + 2 Half Size Rear Doors Only (Exclude Diesel Models w/ DEF Tank) Style: 5" Inch Round Style Tube + Slip-Resistant Plastic Step Pads Item offered: 2pcs 5" Round Stainless Steel Side Step Nerf Bars + Mounting Hardwares + Installation Instruction Direct Bolt-On installation,Professional installation is always recommended Material: Made from heavy duty T304 Stainless Steel