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Reliable water stones with vitrified bond for controlled sharpening of EDC, kitchen, and outdoor knives up to 62 HRC.
Abrasive
Designed for fast and controlled metal removal with an even scratch pattern and low clogging.
Binder
The vitrified bond gives stable sharpening behavior and reliable performance during regular knife maintenance.
Use
Soak for 2–3 minutes before use and spray water during sharpening. Do not use oil.
Set includes
The set includes Hapstone Optimal F220, F400, F500, F1000, and F1200 stones.
This progression covers sharpening from coarse edge work to fine edge refinement.
Conversion
Open the table to compare FEPA grit, JIS equivalent, and micron size.
| FEPA | JIS | Microns |
|---|---|---|
| F220 | #250 | 50 µm |
| F400 | #600 | 20 µm |
| F500 | #1000 | 10 µm |
| F1000 | #3000 | 5 µm |
| F1200 | #4000 | 3 µm |
Performance
Hapstone Optimal stones are suitable for sharpening knives with steel hardness up to 62 HRC.
They are pre-lapped and ready to use, easy to clean, and designed for EDC, kitchen, and outdoor blades.
Specifications
