Gear Puzzle BallsA variation of Oskar van Deventers gear puzzle range is the Gear Ball. With a similar mechanism to the Gear Cube manufacturer Mefferts says this is the smoothest turning puzzle theyve made ever! Its also an amazing looking piece of puzzle art. As the gears move, the colors change on each facing as well as the black frame. Once youve messed it up the challenge start to return each side to a solid colour just like the Rubiks Cube and other well known