70-74 B E Body Door Rally Mirror Screw Nut Install Set. Includes Aluminum Mirror Insert Nuts, Chrome Stainless Steel Screws and Insert Nut Installation Kit. The insert nuts and screws are OEM correct, same size and type as the originals. The insert nut fits into the original opening in the door and expands when tightened to secure to the door, just like the originals. Use the bolt, nut and washer to expand the insert after it is placed in the door. An expanded insert is shown in the picture with the bolt. Includes 4 inserts nuts, 4 screws and 1 install kit (all the parts in the photo).