Hybrid Function - HD Ridez stainless steel armor functions as both side steps and side bars for rocker panel protection Aggressive Design - Stand out with our square tube & slanted grille plate design for a decidedly off-road look Stainless Steel Advantage - Stainless Steel offers better all-weather protection against salt/ice/rust than steel rocker steps Fuel Savings - Improve your truck's MPG by choosing a lighter yet still strong (500 LBS load capacity) set of rock rails Easy Installation - Includes brackets and hardware for quick and fun DIY project; Compatible with F-250/F-350 Super Duty 1999-2016 Extended Cab 2 Full + 2 Suicide Doors