It is bit complicated. The gears were made by a friend of me, and assempled by Michael. The problem is that this friend does not want to make more gears because it wa stoo hard for him. From the other side we have no any drawings because I could not imagine this fact. The samples do not exist any more and the real gears are in my transfer. So for the moment seems to be difficult to get any other set of gears.
You can easy get any time the lockers with the lower ring and pinions.