Toyota Land Cruiser 100/Lexus LX470 Roof Rack - By Big Country 4x4No plastic. No rivet nuts. All welded. All aluminum. This fully welded aluminum expedition roof rack is made from custom designed extrusions and includes all hardware required for installation. No drilling is required. Constructed in a sturdy latticework with dove tailed and welded joints Powder coated black 70lbs 90 1 2" x 53 3 16" 3 feet per side Mounted on 1 2" compatible heavy duty aluminum track (3 16" wall thickness) No rivet nuts used. No rack