Velocity Concepts 3" SS Chrome Side Step Bars | Nerf Bars | Rail Running Boards for 2007-2014 Chevy Silverado/GMC Sierra Crew Cab Application: 2007-2013 Chevy Silverado 1500 Crew Cab Models , 2007-2014 Chevy Silverado 2500 HD / 3500 HD Crew Cab Models , 2007-2013 GMC Sierra 1500 Crew Cab Models , 2007-2014 GMC Sierra 2500 HD / 3500 HD Crew Cab Models ( Will Fit Models With 4 Full Size Doors That Open In The Same Fashion ) Side Bars: Set of 2 Brand New 3" Inch Chevy Side Steps Nerf Bars With Mounting Bracket Kit Function: Heavy Duty T-304 Full Stainless Steel With 5 years Warranty Against Rust And Corrosion. 465 Lbs. Weight Rating. Bar is Positioned High And Tight For A Better Fit And Cleaner Look. Color: Chrome Installation: Easy To Install and Requires No Drilling. All Instructions And Secondary Parts Needed For Mounting are Included. Professional Installation is Recommended