1. 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
2. A great challenge to your intelligence! You'd better take a photo as reference before separation if you are not sure to success.
3. Durable and reliable safe non-toxic
4. Material: Natural high quality wood
5. Single Bullet Size: 7.2* 1.5*1.5cm
6. Blocks Size: Approx. 9.5 x 9.5 x 9.5cm
