HS Power 4" Hammer BLK Oval Side Step NERF Bars Rail Boards 99-15 Ford F250 F350 Crew CAB Application: 1999-2015 Ford F250 / F350 / F450 / F550 Super Duty Crew Cab Models ( Fit Models With 4 Full Size Doors Only ) 4" Inch Side Step Nerf Bars Heavy Duty Steel With Hammer Tone Powder Coating Finish Plus 3 years Warranty Against Rust And Corrosion, Oval Design Provides A More Secure Area. color:Hammered Finish ( Black ) 465 lbs. Weight rating. Bar is positioned high and tight for a better fit and cleaner look. Professional installation is recommended