I search to Key for made the flute. Who know it?

My friend is Maker of wind instrument.
He has made keyless flute for 10 year.
But he changed mind. He want to made keyed flute.
So he need some help by folks.
If you know only ‘key’ maker or sellers, please tell me about information of contact and URL link.

I suppose that’s the essential first step in making a keyed flute — keys!

Any jeweler worth his salt can likely cast the keys if given the right model/molding to copy.
That’s how I have them (missing or broken ones) replaced…a local jeweler casts and cuts. (very nicely too, i might add).