The Small Backing Plate is a plate to go behind a small gear set. Like the backing plate in the doodle kit it is used with a frame of the same size and comes with 8 neoprene bands.
You need versions of the small gear sets that have the notches cut in the corners so that they can attach to the backing plate. You can add backing plate compatible versions of the small gear sets at this listing; consult the pulldown menu for options.
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