IQ brain teaser wooden 3D puzzle toys

Gender: Unisex
Style: 3D Puzzle
Material: Bamboo
Size: 4.5 * 4.5 * 4.5 cm

The lock may look simple, but it's tricky to put it back together again! 
Simple to take apart - difficult to reassemble.
Suitable for both children and adults. 
Use your brain, train your patience. 

Note: 
Suitable for children above 6y
Not suitable for babies as the toy contains small parts