The Thule Xscape bed rail towers (sku 500050) are a pack of four easy-to-install uprights designed to create a strong, adjustable rack system directly on your pickukp truck's bed rails. Large profiles provide a strong structure to support whatever you are carrying, while the telescoping profiles let you adjust the height up or down by pressing the large button, with audible clicks confirming when you’re securely locked into position. Installation is made simple and efficient by a pre-installed nut plate that allows the loadbar to slide freely during installation and adjustment, saving time, and a ratcheting wrench optimized to allow tightening to the required 15 Nm torque spec as well as clearing all angles, making installation effortless. Furthermore, wide bases on each tower provide a solid rack-to-truck-bed platform, and perforations allow for optimal fit of fit kit pads.