Overview: 1. This is suitable for children and adults. 2. A unique and special wooden puzzle. 3. The lock may seem simple, but it contains a lot of mysteries. 4. It is generally easy to disassemble and difficult to reassemble. 5. Not only can it improve your ability, and can even be an amazing plan! 6. This is the best game to develop intelligence and improve balance ability 7. Ancient Chinese wisdom, ancient ancestral locks, you can do it in a second, others can an hour, or even a day can not do it. 8. The lock has become a popular toy for everyone, thanks to its functions of relaxing the body-mind, stimulating intelligence and flexing the fingers. Specification: Size: 6.8 * 6.8 * 6.8CM Material: Wooden Package Content: 1* W ooden puzzle toy