5. 5" RAL Series Cab Length Black Aluminum Running Boards (61725419) by Romik, 1 Pair. Material: Aircraft Grade Aluminum. New RAL series, available for Luxury SUV's and most CUV's. Made from extruded aluminum and top off with a skid resistant top. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind, this product by Romik will last a lifetime. It will meet your needs and deliver great quality at an affordable cost.