These Westin Sure-Grip running boards are designed to give your vehicle a stylish look, while providing easier entrance into the passenger area. They are made of extruded aluminum and your choice of chrome, clear anodized, or black powdercoated finishes. The boards use a 4.5 in. wide rubberized step pad for secure footing and have molded polymer end caps. They require the use of a vehicle specific mounting kit, which is sold separately.