These roof channel towers are designed to fit the 100 series Land Cruiser, 200 series Land Cruiser, and the 120 series roof, to include both Lexus GX470, Land Cruiser Prado 120, and 2003-2008 4th generation 4Runner tower solutions. Kits come complete with stainless hardware to assemble the towers and secure it to the vehicle.
pro tip: during installation, apply a little silicone to the screw threads to further keep water from penetrating. If you are not reusing the rubber pads that were below your factory towers, use some thin neoprene washers, or rubber-backed rosette washers, between the towers and roof. This will prevent metal on metal contact, and help keep water from entering the vehicle.