Wakasa Awasedo Japanese Natural Sharpening Stone 153g (5.4 oz)
35mmX45mmX30mm
#6000 to #10000 Grit For final sharpening Razor or High Carbon steel blade Cutlery
Hardness--------8.6
It raises very good amount of black slurry quickly, so it might not need Wakasa Tomo Nagura or a devise that generates slurry. It looks not too hard and not too soft. It is ideal hardness to me.
(Scale; 1 to 10, 1-3 is very soft muddy rough grit whetstone 3-6 is soft medium grit whetstone, 6-8 is hard medium grit whetstone; 8-10 is fine grit whetstone)
Particle Size------- 9.0
(Scale; 1 to 10, 1-3 give deep scratch marks to the steel, 3-5 is delete the 1-3 scratches, 5-8 makes the steel cloudy, 8-10 makes the steel semi-mirror finish or mirror finish)
It makes my blue II steel blade knife Jigane became shiny bright silver color to semi-mirror finish, and Hagane became mirror finish.