Mifeier Side Step Rails Nerf Bar Running Boards Fit 99-16 Ford F250/F350/F450 Super Duty Super Cab (2 Full Size Front Doors and 2 Half Size Rear Door) 3" S/S 99-16 Ford F250/F350/F450 Super Duty Super Cab (Aka Extended Cab) Pickup Only (Not Fit Regular or Supercrew Cab) 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 Material: Made from heavy duty T304 Stainless Steel