They're from Kyocera. I've got one and I'm underwhelmed. They're brittle,
not terribly sharp, and only 6" long.

After other people pretty much destroyed the edge, I sent it back to Kyocera
to be resharpened and asked for them to make it sharper this time, even if
it meant an even more delicate edge. It's better, but still not that good.
Now it pretty much just sits in the drawer.

I recommend a good steel knife instead. I go to cutlery.com

Hasta,
Curt Nelson