Compatibility : This running boards will perfectly compatible with. 2500HD 3500HD Crew Cab. If you’re not sure what model you have, please check the cab size picture. Why you choose our running boards 6.5 wide stylish black carbon steel pad provides a textured surface for excellent footing. High around and low in the middle with hollow holes design prevents water and dust accumulation effectively. Unique powder coating offers exceptional rust and corrosion resistance. Proven to handle up to 450 lbs without bending. All return items MUST be in brand new condition. Specialized in aftermarket auto parts since 2012, we source and work directly with professional manufacturers to provide the highest quality parts at the most economical prices.