Such a simple solution
Fingernails of the world and fans of clever key-rings rejoice! No longer must you live in fear of having to replace a key in a key ring, because some smart Swedes have updated the ancient ‘plain metal circle’ design. The FreeKey
These keen key connoisseurs have crafted a clever key-ring
that opens to allow easy access, to add or remove keys without any fuss. Stylish and simple, the wave design means you simply push down on the logo
and the leverage opens the end of the key ring.
One key(ring) to rule them all
More detail and specification