Perpetual motion machine. I could keep watching it forever. Marble Perpetual Machine is a very unique, one of a kind toy/decor gadget. Amaze your friends and make them scratch their heads with this clever toys. Every one will love it.Product Description:- Material: the Wooden parts are made of Doussie (very high quality wood). The wire is made from Stainless steel.- Dimension: 7in*7in*4in/17cm*17cm*10cm (LxHxW)- Color: Only the natural color is availble. Please refer to the last listing…