Detailed Spec

Brand: Hitohira ひとひら
Product Type: Natural Stone
Producing Area: Kyoto/ Japan
Mine: Ohira
Recommended Usage: Kitchen Knife (Edge), Kitchen Knfie (Bevel), Chisel, Plane, Hagane Polish, Kasumi Finish with "Dorodashi"
Hardness (5 = Very Hard): 3.5
Grain Scale (5 = Very Fine): 3.7
Sharpening Speed (5 = Very Fast): 3.6
Soaking Requirement: Not required
Size: 207 x 75 x 30mm
Weight: 1102g
Revied by Naoki Tsuda
Update: 1月 20, 2026