Greg C. said:
A Must have for your Gear Collection
A new type of challenge for the gear puzzle family. For quite awhile everything new for gear puzzles were shape mods but this is so unique and the quality is superb all-around. They repressed them on the Mefferts site so they will hopefully show up in shops again soon. No matter where from you need this puzzle if you like interesting movements, gears, good challenges and making commutators. Highly Recommended.