Detailed Spec

Brand: Hitohira ひとひら
Product Type: Natural Stone
Size: Type 30
Producing Area: Kyoto/ Japan
Mine: Shinden
Recommended Usage: Kitchen Knife (Edge), Straight Razor, Chisel/ Planes
Hardness (5 = Very Hard): 3.9
Grain Scale (5 = Very Fine): 3.9
Sharpening Speed (5 = Very Fast): 3.8
Soaking Requirement: Not required
Size: 206 x 77 x 36mm
Weight: 1503g
Revied by Naoki Tsuda
Update: 2月 27, 2026