Yakima CoreBar Crossbars WhatsApp. Steel Aerodynamic Roof Rack Crossbars Combining modern aerodynamics with old school muscle, the new CoreBar is the first aero bar built with roll formed steel's strength, utility and durability. The JetFlow design is wind tunnel tested to reduce drag for less wind noise and better fuel economy, and the galvanized steel delivers proven load bearing performance. Product Details Wind tunnel tested JetFlow teardrop shape is strong, quiet and exceptionally aerodynamic Roll formed galvanized steel holds the load Sleek aerodynamic design looks awesome on your cars roof Vinyl wrapped for durability and corrosion resistance Includes CoreBar SL Adapter to integrate with all StreamLine System Towers Available in 4 sizes: SM (50),MD (60), LG (70) and XL (80) Product Specs Weight: 9. 00 lbs. Dimensions: L 50. 75 in x W 2. 75 in x H 1. 10 in Limited Lifetime Warranty