I have no idea why people are writing good reviews about this product. This is a very poor execution of a very famous puzzle. As you can see from my picture, the puzzle is cheaply made and the pieces, which need to line up exactly on edge on each piece, simply do not line up. This makes the puzzle very difficult to turn and requires a frustrating amount of jiggling just to get it turn where it should.
I have another (well made) version of this puzzle which is really fun to solve. This is simply a bad substitute. Don't waste your money, there are better made products out there. Mine is now in the trash bin.
Imported from Japan or USA. It takes about 2 to 3 weeks to arrive.