(BR-HLA-OEM-0) Our Hi-Lift Mount installs directly to the FJ factory roof rack , making your rack more capable and giving the Hi-Lift a secure place on your vehicle. Once the Hi-Lift is installed a lock can be placed on the threaded supports. Material Thickness: 3/16 Inch (4.7 mm) steel tubing Finish: Epoxy primer (rust barrier) with black powder coating. Mounting Method: Clamps install directly on OEM rack. (No drilling required).