Aiiwatani Kiita Lv 4,5 (a3427)

Aiiwatani  Located north for Kyoto along with Takashima

They produce some of Harder and finer stones then ussual from that region. 

Very nice feel, smooth and quite hard 

Can be used as finisher for razors but also ultra fine finisher for knives and high end tools 

Produce super nice finish and quite easy to use 

No toxic lines or inclusions at all ! 

Best With nagura