Description: Intelligence toy is an old and traditional Chinese intelligence game and has been popular since ancient times Hiding very mysterious mathematical and physical principles, it is easy to separate within a short time, while difficult to reassemble Try to get out the red ball, and put it in, it not very simple Durable and reliable safe non-toxic Size Chart: 7.5*7.5*7.5cm Package Includes: 1 x Kongming Lock Toy
