Plastic, Helvtica Bold, Stud/pad in line for rail (with nuts for each stud), Yellow 2000, Text: Drv (15" high) Text: Drv (12" high), Text: Acc (15" high), Text: Acc (12" high) - NOTE: the rail spacing on the 12" letters is 6" between rails and the spacing on the 15" letters is 7.25" between rails