Rocker Panel Mount:07-16 Silverado/Sierra New Body Style Extended/Double Cab (w/ 2 Half Size Rear Doors) 6" S/S Mega Oval Tube Side Step Rails Nerf Bar Running Boards Installation: Bolt-On To The Rocker Panel Style: 6" Inch Mega Oval Style Tube + Slip-Resistant Plastic Step Pads Item offered: 2pcs 6" Mega Oval Stainless Steel Side Step Nerf Bars + Mounting Hardwares + Installation Instruction Material: Made from heavy duty T304 Stainless Steel Surface finish: polished