Mifeier 3" S/S Side Step Rails Nerf Bars Running Boards For 99-13 Silverado/Sierra 1500/2500/3500 Extend Cab (With 2 Half Size Rear Doors) 1999-2013 Chevy Silverado/GMC Sierra 1500/2500/3500/1500 HD/2500 HD/3500 HD Extended Cab Which Has Half Size Suicide Style Rear Doors Only Material: Made from heavy duty T304 Stainless Steel 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 Direct Bolt-On installation