Mifeier Side Step Nerf Bars Running Boards For 99-13 Silverado/Sierra 1500/2500/3500/2500HD/3500HD Extended Cab (With 2 Half Size Rear Door) 4" Oval S/S 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 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 Material: Made from heavy duty T304 Stainless Steel