A nice and big Yaginoshima from Tanaka Toishi. A very even and consistent stone without any hard lines or toxic areas. Easy to use, easy to get an uniform polish on bevels. Good for kitchen knife bevels and edges. 

Detailed Spec

Brand: Tanaka Toishi 田中砥石工業所
Product Type: Natural Stone

Hardness (5 = Very Hard) : 3.3
Grain Scale (5 = Very Fine) : 4
Sharpening Speed (5 = Very Fast) : 3.7
Size: Type 30
Mine: Yaginosima
Producing Area: Kyoto/ Japan
Update: July 6, 2023