Lund 318068 Tube Step Running Board Brackets for 2007-2018 Silverado & Sierra 1500, 2500 HD, 3500 HD (Excludes 2011-2018 Diesel Models) | Fits Extended & Crew Cab 12-gauge steel construction provides solid and reliable support for your Lund Multi-Fit Tube Steps (sold separately) Bracket Kits are application specific, but work on any Lund Multi-Fit Tube Steps (sold separately) Durable black powder coat finish to resist corrosion Hardware included Backed by a limited lifetime warranty