Made of wooden material. Fits for man and woman, old and young above 54(kids should be under adults' supervise when playing this toy)best challenge for anyone.
- The lock may look simple, but it contains lots of mysteries that designed with mathematical and physical principles, to challenge your mind and test your brain.
- It would be a great brain teaser to improve your physical and mathematical faculty, creative thinking and improve both of your IQ& EQ, anyone can pick it up and play.
- Use your brain, exercise your patience,it is easy to separate within a short time, while difficult to reassemble but as long as the master of the structure, it is sure to solve.
- A beautiful ornament, but also a tool to test your intelligence or just relax. It's funny to get open the box without any factors of violence, just with your intelligence. just try.
Warning: do not eat
Model Number: Education
Age Range: 2 years old and up
Approved ASTM and CE testing. Made of 100% Real Wood, Non-Toxic, Environment-friendly, Safe for Kids. Meets all specifications of European (EN-71) and American (ASTM) Toy Safety Standards.