David Gear Cube PlusThe Polo Gear Cube with a different gear ratio and the circles split into eight segments.
Focal GemThe Junior Gem with different cuts and without edge pieces.
Gear 1x2x2The Polo Gear Cube scaled down to a 1x2x2.
Gear 2x2x3A 2x2x3 with the turns on the long axis connected by gears.
Gear GeraniumThree circles intersecting like the puzzler. The outer two are connected with a gear meachanism.
Gear Octagonal PrismAn Octagonal Prism with three layers with the turns between the layers connected by gears.
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