Developed as the keystone of Malone's cross rail product line, the AirFlow is delivered complete and ready to install. Featuring integrated towers, pre installed locks and double walled aerodynamic aluminum rails for a quiet and confident transport. The Malone AirFlow system comes with two 50 inch bars with locking towers and key. With the tool free installation, the adjustable mounting towers easily install to most factory side rails. Holds up to 165 lbs. load capacity for confident transport. This system is a safe and affordable way to transport your gear and is backed by Malone's limited lifetime warranty program.