Kaleido Gears construction set provides hours of great fun while introducing children to some basic principles of mechanics. Try all possible combinations to make a base with the interlocking plates, and then insert axles and connect gears so that they rotate at the same time. Finally, turn the crank to start a spectacular chain reaction and watch the beautiful visual effects. Each gear is decorated with a different design that stimulates colour perception and creativity. Kaleido Gears is made of durable and washable plastic that is both safe and unbreakable.