Dense ozone resistant EPDM rubber seals the running board against the body. This pair will fit the left & right running board. Product is made from the original specs and from high quality ozone resistant materials to fit your vehicle. These seals attach to bottom of cab to fill the gap between cab and running boards, Will fit Chevrolet and GMC 1947-1955 1st series truck, panel, and suburban's, each seal is 40" long.  Precision Replacement Parts. Thanks For Looking !