CAREPAIR Rocker Panel Mount: fit 07-16 Silverado/Sierra 1500/2500/3500 New Body Style Crew Cab (w/4 Full Size Doors Only,Exclude Diesel) 3" S/S Tube Side Step Rails Nerf Bar Running Boards Installation:Bolt-On To The Rocker Panel Style: 3" Inch Round Style Tube + Slip-Resistant Plastic Step Pads Item Offered: 2pcs 3" Round Stainless Steel Side Step Nerf Bars + Mounting Hardwares + Installation Instruction Material: Made from heavy duty T304 Stainless Steel Surface finish: polished