Quote Originally Posted by onimaru55 View Post
I think any stone that comes with a synthetic is just for cleaning & resurfacing. 12k for such a stone makes no sense
I think on this page the same stone is advertised, and the nagura stone is listed as 12,000 grit: Ice Bear 10000 Grit Japanese Waterstone, 12000 Grit Nagura Japanese Waterstones - World of Survival

Elsewhere they say that this nagura can also be used as a hone in its own right: Ice Bear Nagura Stone 12000 Grit Nagura Stones - World of Survival

I suppose the only sense it makes is that you wouldn't want to use stone with too low a grit to create a slurry, right?