HY-KO Easy Open Key Ring

Easy Open Key Ring from Hy-Ko Products Company , established in 1949, which offers a wide range of signs and plates actually used in American offices, factories, stores, etC

This key ring is stylish but has a rugged look due to its stainless steel construction.
As the name suggests, it is easy to open and close by turning the ring, but the keys do not easily fall off or come off from where they are attached.

Anyway, Simple is best.