Flute Ring Keeper Plug Pearl PRC-1

Flute Ring Key Plug Pearl PRC-1

I bought this new at Shimamura Music about a year ago because I suddenly had to use ring keys at school. However, I ended up getting used to the ring keys without ever using it, so it's been stored in my flute case.
I'd like to pass it on to someone who needs it.

The store told me it would work with Yamaha, Pearl, and Altus ring keys, but I haven't tried it myself.

Please understand that this is a used item, as it has been kept in a musical instrument case for nearly a year.

Flute
Ring Key
Ring Key Plug
Hole
Silicone Plug
Plug Hole