- Size 4.5cm * 4.5cm * 4.5cm
- 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. 

This item is NOT sold in stores!
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*Due to high demand please allow up to 3-4 weeks for delivery. This Item ships from our international supplier.