Fit 04-08 Ford F150 06-08 Lincoln Mark LT Super Crew Cab w/ 4 Full Size Doors) 4" Oval Tube S/S Side Step Rails Nerf Bar Running Boards Installation: Bolt-On Style: 4" Inch Oval Style Tube + Slip-Resistant Plastic Step Pads Item Offered: 2pcs 4" Oval Stainless Steel Side Step Nerf Bars + Mounting Hardwares + Installation Instruction Material: Made from heavy duty T304 Stainless Steel Surface finish: polished