A word from the designer:
Based on the originals from the British puzzle craze of the 19th century, we have successfully revived this puzzle in its new form. These two S-shaped pieces may seem uncomplicated, but freeing them is anything but simple.
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.