This is a set of 3 rings and pouch made by Joe. It was his attempt to improve the small linking rings. They were very popular at the time because of Shoot Ogawa performing the Ninja rings. This set was for sale in my magic shop. Key ring has a small piece held in place by a strong elastic. It bends to the side to allow the rings to link. We said, Joe, what happens if the elastic wears out? No comment from Joe. But here they are, for the collector who loves Porper products.