PRODUCT RATING: out of 5 (Blank: Not Rated). Click on this link to see more information, images, reviews by real users and alternatives:
The lock may look simple, but it contains lots of mysteries.
Use your brain, exercise your patience, is unable to untie the knot, but as long as the master of the structure, is sure to solve.
Challenge your mind and patience.
Caution
1.Children must use it under the adult’s tutelage.
2.Don’t throw the away to each other.
3.Don’t use it if there is any problem.
4.Don’t keep the toy in the mouth to prevent children devour small parts in the toy.
Maintenance:
Handle with care, avoid desiccation, being washed.
Challenge your mind and test your nerve
Easy to take apart and difficult to reassemble
Made of wood, 6 pieces include
Suitable for both children and adults
List Price: $13.99
