CAREPAIR 2pcs 4" Carbon Steel Oval Side Step Rails Nerf Bar Running Board For 99-13 Silverado/Sierra 1500/2500/3500 Extended Cab (w/2 Half Size Rear Doors Only) Item Offered: 2pcs 4" Oval Carbon Steel Side Step Nerf Bars + Mounting Hardwares + Installation Instruction Installation: Direct Bolt-On Surface Finish: Black Powder Coated Material: Made from heavy duty Carbon Steel Position: Come with both sides: 1pc for driver side and 1pc for passenger side.