It is made of good material and will last a long time. It should be rated a 1 on the difficulty scale, not a 3. I personally solved it in 20 seconds, and my family members solved it in less than two minutes. They had never solved such mysteries before. If you are looking for a more challenging puzzle, I would recommend the cast metal Hanayama Starfish Puzzle. It has a lower difficulty level but is MUCH harder to solve, took me a few days and my family over a week.
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