Yakima Tracks offer easy connectivity, and a low profile when the towers are removed. Combine the Tracks with Yakima Control Towers plus a set of their Landing Pads and you have a versatile, adjustable base for your rooftop car rack system (towers, pads and accessories sold separately). The Tracks come in pairs in 42- and 54-inch lengths with hardware for mounting on sheet metal, and 54- and 60-inch lengths with hardware for use with fiberglass.