Build complex three-dimensional structures, connect the gears, and set it all in motion in a spectacular chain reaction! Thanks to a plastic chain, this compound construction system allows you to transfer motion even to the furthest gears. The useful basket, equipped with a sturdy handle, allows you to take Georello Tech Toolbox with you and play wherever you want! With this gears game you can learn the first principles of mechanics through play, living ever-new stimulating and fun experiences! This product is unbreakable and safe. Contents include: 11 gears in 4 sizes, 10 white pivots, 1 yellow pivot, 24 columns, 3 half-columns, 23 connection joints, 12 4-way knots, 4 column bases, 40 chain links, 1 crank, and 1 sticker sheet.