The Wooden Camera LW 15mm Adapter attaches to the 19mm and 15mm Studio Rod Clamps to adapt to 15mm lightweight accessories. The height of this adapter is adjustable, so LW 15mm matteboxes with no height adjustment can be vertically aligned if necessary.
The 15mm posts on the adapter have 1/4"-20 threaded holes for adding a bolt on 15mm rods if longer mounting area is needed.