Difficulty Level: 5 of 6 Get ready to spin your flywheels with the Cast Rotor metal puzzle, a challenging and intriguing brain teaser that will put your problem solving skills to the test. This 3D metal mechanical puzzle from Hanayama Huzzle is designed to resemble a miniature rotor, with intricate details and a sturdy metal construction. The stylish design of the matching interlocking pieces of the Cast Rotor display like an emblem. The intention of the Cast Rotor is to separate the two pieces and then to reassemble it. The uniquely cut pieces, along with the fact that there are numerous solutions, make this a difficult puzzle. Perfect as a gift for the puzzle lover in your life or a challenging treat for yourself. Kyoo Wong is the mastermind behind this intricate metal puzzle.