RAFTUDRIVE Running Boards: 4 in Oval S/S Fit 07-18 Silverado/Sierra 1500/2500HD/3500HD (Excluding Diesel Mode) Ext/Double Cab (Not Crew) with 2 Full Size Front Doors and 2 Half Size Rear Doors Only fit 07-18 Silverado/Sierra 1500/2500/3500 Ext/Double Cab (Not Crew Cab) (With 2 Full Size Front Doors and 2 Half Size Rear Doors) Re:Not Fit Diesel Models w/DEF Tank 4" Inch Oval Style Stainless Steel Tube + Slip-Resistant Plastic Step Pads Made from heavy duty T304 Stainless Steel Direct Bolt-On Mirror Polished, Shiny Chrome Color