|00:32A Tube and Plate Flange or Two Piece Flange was used on certain Gibson Mastertone banjos. One piece is a metal tube that encircles the rim and is pulled up against a corresponding wooden lip that is cut to the same radius as the tube. This is drilled for the hooks to pass through for tightening the head. The second part is a flat plate that fits under the tube and serves as a decorative cover for the opening between the resonator and the rim. Most people find the one piece flange more desirable.