So this is an ultra-compact gearing system with an extreme reduction. The gear ratio is 11.373.076 to 1. In other words: You turn that handle 11 million times and the last gear will turn only once. We have no idea what this could be used for but if you like to collect weird gadget then this one is quite cool. We have to say that for a plastic toy that will be easily printable with 3D printers in near future it is quite expensive.