The affordableSteelToproof rack allows you to carry bikes, kayaks, ski carriers, roof boxes, and most accessories on the roof of your vehicle equipped with raised factory side rails. This complete roof rack system includes 2 steel square crossbars and 4 towers. These 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 opportunity theft. The rack clamps onto your existing raised side rails and tightens down with the included tool making it simple to remove and re-install. Product workmanship and material performance is ensured with a Lifetime Limited Warranty. Features: Corrosion resistant steel bars for longer life Spacer blocks to fit smaller bar profiles Key locking security attachment towers Square shape fits most rack accessories Complete system ready to install Simple Installation. No additional tools required Lifetime Limited Warranty Specifications: Lengths: 50\