StillCool 3D Jigsaw Puzzles Wooden Classic Cube Genius Puzzle and Brain Teasers, Set of 6 Old China Kongming Luban Jigsaw Lock Educational Toy Gift for Kids;

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.
Easy to take apart and difficult to reassemble.
Not only it can enhance your ability, and can even be an extraordinary plan.
Suit for both children and adult.
Challenge your mind and patience.

Cautions:
1. Children must be used 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.

Package Contents:
Set of 6 Wood Classic Brain Teaser Jigsaw Lock Puzzle