Mifeier Side Step Rails Nerf Bar Running Board For 01-13 Chevy Silverado GMC Sierra 1500/2500/3500 Crew Cab (With 4 Full Size Doors) 4" Oval S/S 2001-2013 Chevy Silverado/GMC Sierra 1500/1500 HD/2500/2500 HD/3500/3500 HD Crew Cab With 4 Full Size Doors Only Material: Made from heavy duty T304 Stainless Steel Style: 4" Inch Round Style Tube + Slip-Resistant Plastic Step Pads? Item offered: 2pcs 4" Round Stainless Steel Side Step Nerf Bars + Mounting Hardwares + Installation Instruction Direct Bolt-On installation