Loading up the car for cross-country adventures is a breeze with the robust carrying power and streamlined design of the Yakima CoreBar Base Rack Bars. As part of the Streamline System, the CoreBar Base Rack Bars mount to Yakima's Timberline, Ridgeline, Baseline, and Skyline towers (sold separately). Its JetFlow teardrop shape slips through headwinds with effortless precision, reducing drag and quieting wind noise. Roll-form galvanized steel construction withstands heavy loads and daily use, with a vinyl-wrapped finish for corrosion resistance in wet environments.