Okay, I did a little research. AUS-6 steel. The ones I'm finding run about $30 (One Stop, Knife Outlet, Best Knives). If anybody finds it cheaper, let me know. Still, that looks like a lot of knife for $30.
However, the ones I'm seeing all have a grey rather than a black bead blast. I sort of like the black. Also, Kobun's scales seem to have more texture. Where did you pick up yours, Kobun?
Here's another pic: