The Front Runner Expedition Rail - Middle Kit allows easy conversion to a full perimeter, safari style, basket shaped roof rack. Designed as an upgrade for owners of 2 Front Runner Expedition Rail - Front or Rear kits. * Install in minutes. * No drilling required. * Adds extra cargo support. * Attractive, low profile design. * Mounting hardware included. * Powder coated with the same durable, weather resistant finish as the Slimline II Roof Rack. * Manufactured in corrosion resistant high density aluminum components.The modular bolt on design allows you to remove rail components whenever needed, ie. to mount a roof top tent.PLEASE NOTE: the Front Runner Expedition Rail - Middle Kit only works in conjunction with 2 Front Runner Expedition Rail - Front or Rear Kits and is used to create a Full Perimeter rail.