"A prize winner from the 2001 1st Annual World Puzzle Design Competition, this puzzle was designed by the young Dutch phenomenon, Oskar Deventer, who is considered to be one of the world’s brightest creators. The gear exhibits a unique kind of movement. Once together in its final form of beauty, the gear is fixed in place in the cubic box. It could very well serve as a desk decoration to satisfy a kind of smoothing, intellectual curiosity.The key word is 'teeth.'"
Hanayama is known worldwide for challenging puzzles and quality manufacturing. Can you take the pieces apart, then put them back together again? Hanayama cast metal brain teasers have 6 levels of difficulty, and each puzzle is Mensa-rated. Level 3 puzzles are considered moderately challenging by most puzzlers.