Cast Ring 2 is the second "ring" puzzle from Hanayama, coming several years after the company introduced the original Cast Ring. Even though the new one is expected to be an improvement over the previous puzzle, it is in fact inferior in almost every way. The first thing which grabs attention is how small and flimsy the toy is - looks more like a trinket than a high-quality product. It also feels cheap and hardly stays put together. Its difficulty is supposed to be 5 - compared to 4 for the old model, but actually is considerably easier. So far Ring 2 is my least favorite Hanayama puzzle and I really don't recommend you buying it, unless you want to fully complete your collection.