These running boards are precision-fit for compatible vehicle models and made of carbon steel for a strong, stable structure. The rustproof coating resists rain and rust, while the non-slip step surface improves traction. Tested to support up to 500 lbs, they are great for daily commuting, off-road driving, camping, farm work, and more. | Vevor | | Running Boards, 3 Inches Side Steps Compatible with 2019-2025 Chevy GMC 1500/2500HD/3500HD Crew Cab | Black | Best Buy