Lund 22908039 Crossroads Running Board Kit for 2015-2018 Silverado & Sierra 1500, 2500 HD, 3500 HD with Extended Cab Crescent-shaped design with chrome end caps create a rugged yet contemporary look Constructed of durable yet lightweight aluminum to provides years of tough, virtually corrosion-free performance Provides safe, easy access into your vehicle; Full-length rubber treads provide traction for safe footing Includes mounting brackets & hardware Backed by a limited lifetime warranty