CURT roof rack cross bars empower your outdoor adventures by providing convenient, secure roof cargo storage whenever needed. These roof crossbars are easy to install with no tools required, and they feature a lightweight aluminum construction for easy handling. CURT roof rack cross bars install quickly and securely with their lightweight, universal design. They come with rubber-coated clamps that fit most car roof side rails, and they are adjustable for a maximum span of 50 inches. Best of all, they required zero tools for installation! The integrated knobs tighten down onto the rails for solid mounting, and they have key-operated locks to help enhance security and deter theft. CURT universal roof rack cross bars are constructed from naturally rust-resistant aluminum to easily outlast the elements. Aluminum is also lightweight for easier handling and installation of the crossbars whenever needed. To further protect the aluminum against corrosion and add a sleek look, the oval OE-style tubes are covered in a durable black powder coat finish. These rooftop crossbars are rated for 150 pounds to accommodate a variety of kayaks, canoes, rooftop cargo carriers and much more. They also feature rubber strips along the top edge to avoid marring the finish on your kayak or other cargo. CURT roof rack crossbars measure 53-3/8 inches long, 2-1/8 inches wide and 7/8 inches high. They stand 2 inches off the car roof side rails when installed. Two cross bars are included per package.