L shaped fiberglass Retainer plates = qty 2.
1) Take the white "L-shaped" daggerboard cassette pieces and place one on each side of the round daggerboard pin.
2) Hold the cassettes together firmly and insert the daggerboard into the daggerboard slot in the board.
3) Line up the screw holes on the cassettes over the screw holes in the board.
4) Make sure holes align with the insert holes of the board. Screw in the 4 screws with washers into the retainer plates with daggerboard in place.