For little tinkerers! This plug-in and mechanical toy comes with a total of 12 plug-in elements made of high-quality, colourful wood on a sturdy plug-in board. The highlight: the elements are connected by gear wheels. What a great game idea! The colourfully painted wooden elements are connected by gears. Get your first ideas of mechanisms and try to find the best combination of the wooden elements to get all wheels rotating by moving only one of them.