If Mr. Kramer himself says they are Choseras, I think he should know. You can't simply claim something like that in a public video if it's not right.
Look like Shapton Glass stones to me. But the grits don't match up. Hard to say. Shapton doesn't offer 400 or 5000 in the Glass line. Might be special for this private label run?
maybe they're choceras with glass backing?
My guess is they're a special run for Zwilling by Naniwa, since they've already got the relationship.
At Death's Door You Only Have 2 choices. Die Happy or Die Regretfully.
Knowing this...........Choose 1 and Live!!!!!!!!!
why are the kramer stones so expensive? they appear to be pretty small stones too.
The nagura cleaning stone they sell with them seems to me identical to the one you get with the Choseras. You may get one separately in Europe for €6, but sold with the Kramer they cost some $25, announced as a great saving...
the kramer leather strop looks good. i might get one.