Kinetic Art Perpetual Motion Machine Rolling Ball Perpetual Marble MachineMaterialMade of high-quality wood, durable, strong visual experience.KINETIC ARTThis decoration helps promote feelings of calm, helps reduce stress/anxiety, and helps improve concentration.It also helps hypnotize people who suffer from insomnia.MultipurposeCreate an elegant look for your living room, walls, home, dining room, bar, office, hotel and outdoorenvironment.Displayed as a wall decoration in modern homes.Help RelaxThis is a fascinating toy for family, friends and colleagues to keep them balanced and relaxed. Its a neat focal point to destress after a busy day of working or studying. So you will find a better lifeDesignThe working principle, using the principles of dynamics and gravity to make the metal balls constantly toss and fall. It took a lot of time to precise build, and testing. Amaze your friends and make them scratch their heads with this clever toy.