Toy Void cube - Void Cube - Okamoto Cube

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

Product Description ■ "Okamoto Cube Series" has a lineup of void cubes.
A mysterious puzzle that rotates without a center!
Why does it move without a center?
It is difficult to align without a center!
It is a mysterious and difficult puzzle.
◆ Product Details
Package Size : Height approx. 12 cm x Width approx. 12 cm x Depth approx. 6 cm
Puzzle Design : Katsuhiko Okamoto
* Winner of the 2007 World Puzzle Contest