Detailed Spec

Brand: Hitohira ひとひら
Product Type: Natural Stone
Size: Type 30
Producing Area: Kyoto/ Japan
Mine: Shobudani
Recommended Usage: Kitchen Knife (Edge), Straight Razor, Chisel/ Planes, Hagane Polish
Hardness (5 = Very Hard): 3.8
Grain Scale (5 = Very Fine): 3.5
Sharpening Speed (5 = Very Fast): 3.6
Soaking Requirement: Not required
Size: 205 x 75 x 35mm
Weight: 1269g
Revied by Naoki Tsuda
Update: 2月 27, 2026