Cast Donuts has beautifully shaped rings that look like 2 donuts intertwined together.
Try solving the puzzle by imagining the inner structure and using each of the rings' division lines as a hint. You will be pleasantly surprised by the unique movements needed to separate the rings.
Creator: Finland's Timonen.
Puzzle Master makes a large assortment of disentanglement puzzles, brain teasers, jigsaws, puzzle rings, trick locks, boomerangs, chess sets, etc. This Canadian company specializes in taking traditional puzzle designs and adding their own unique touch.