The AirFlow2 Roof Rack lets you carry gear and accessories on the roof of your vehicle that has raised, factory side rails. This complete roof rack system includes 2 double-walled, aluminum, aerodynamic crossbars and 4 towers. The aerodynamic shape creates a quiet roof rack system. The full-length crossbars extend past the towers to give you more mounting space for carriers. The towers have built-in locks to protect the rack from theft. This roof rack clamps onto your raised side rails and tightens down with the an integrated tool, so it's easy to remove and install. FEATURES• Non-corrosive aluminum, double-wall construction• Aerodynamic profile to reduce wind noise• Rubber-coated steel clamps fit tightly around side rails• Integrated T-slots for easy accessory attachment• Key-locking security attachment towers• Comes complete, ready to install• Simple, quick installation with no tools required• 165-lb. load capacity for confident transport• Lifetime Limited WarrantySPECSLoad Capacity: 165 lbs. Length: 50"Width: 3.5"Height: 4.5"WHAT'S IN THE BOX2 Crossbars with Towers and Integrated Locks2 Bottom Rubber Channel Inserts4 Plastic End Caps2 Keys5mm Allen WrenchInstruction Manual Crossbars extend past the towers for more mounting space Built-in locks protect the rack from theft Clamps on to your raised side rails | Malone AirFlow2 Roof Rack with Aero Crossbars for Raised, Factory Side Rails, 50"