【Kinetic Art】Kinetic art desk toy is a special and unique toy for children, teenagers and students, which can bring a lot of joy, decorate your table and help acquire knowledge of physics.【High Quality Materials】The perpetual motion desk toy is made of high quality materials. Made of high quality wood materials and the wires are made of stainless steel, they offer a long service life. and excellent appearance.【Exquisite workmanship】Marble perpetuum mobile was treated with exquisite craftsmanship, which adopts complex technology and precise structure, durable for long service life.【Wide application】Electronic marble perpetuum mobile is not only a delicate and beautiful ?ne table decoration, but also a scientific educational game for children to learn physics.【For children】The competing marble at the end of the game. Perpetuum Mobile is a way for teenagers, children and children to play with and learn physics skills that can help slow down time. happen and relax.Product description:This wooden perpetual motion machine is exquisite scientific and artistic craftsmanship with unparalleled skill. which will amaze your friends and make them scratch their heads with this clever toy that everyone will love. ?? Specification: Name: Kinetic art desk gadget toyMaterial: Wood + Stainless steelSize: Approx. 22 x 20 x 12 cm/8.7 x 7.9 x 4.7 inches Packing list:1 * Kinetic art desk gadget toys