Perpetual Motion Machine Marble Kinetic retail Art

Product Name: Perpetual Motion Machine Marble Kinetic retail Art
Dimensions Height: 23 Centimeters; Width: 19 Centimeters; Depth: 12 Centimeters Description Perpetual Marble Machine Creative Marble Machine Kinetic Art Perpetual Motion Desk Toy: The technology and design behind it is retail quite complex. It takes a lot of time to build and test accurately. Amaze your friends and make them scratch their heads with this clever toy. Stress Relief: A classic tabletop accessory, this action toy is a dynamic art. Use it to k ill time, relieve stress, summon bored colleagues or teach young people about physics. Product size: about 23*19*12cm Product material: beech + stainless steel.