Size：185mm x71mm x38mm
Hardness: Lvl 4
Perfectly finished type80.
It is made in Nakayama, a famous brand of the highest quality.
With beautiful back skin.
This is a rare thick stone from Nakayama.
Very hard. One of the finest particles available.
Bears the Maruka stamp.
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.
This type of stone is also easier to grind.
Its suitability for sharpening kitchen knives has been further improved.
The sharpening juice is pitch black.
Very beautiful kiita.
The unique pattern is also beautiful.
Mirror finish is possible.