Size：195mm x70mm x33mm
Hardness: Lvl 4
Perfectly finished type60.
It is made in Nakayama, a famous brand of the highest quality.
Very hard. One of the finest particles available.
It has been indispensable since ancient times for the maintenance of carpentry tools for shrines and temples. It is also the highest grade for sharpening kitchen knives.
The sharpening feeling is very delicate. There is no other whetstone with such a pleasant sharpening feeling in other mountains. It is the only one of its kind.
The sharpening juice is pitch black.
Very beautiful kiita.
Mirror finish is possible.