The Thule EC2 - Rapid Aero Load Bar End Caps  are a set of four plastic caps that snap fit into the end of Thule's Rapid Aero load bar.  End caps offer a finished look to the end of the bar but also serve as protection from the sharp cut ends of the load bars.  It is important to know that end caps are always included with Thule foot packs and that load bars do not include the end caps.