Westin's HDX Running Board is made of heavy duty commercial grade steel. The HD style diamond tread provides a textured step area and features Westin's signature of quality textured black powder coat finish for added appeal. The HDX Running Board's diamond tread step surface, is made of a continuous single sheet of metal, which includes a 1 inch splash guard, preserves the integrity of the material. Each board includes a useful boot scraper at the front-end of the board for convenient clean-up prior to getting into the vehicle after a dirty job, or off-road fun. Westin HDX Running Boards are proudly designed, engineered, and made in the USA. Backed by a 3 year warranty.