Hapstone Optimal

A reliable water stone designed for sharpening knives with steel hardness up to 62 HRC. Suitable for EDC, kitchen, and outdoor blades.

• Abrasive: Aluminum Oxide

• Bond: vitrified

• Lubrication: Water only (no oil)

• Use: Soak 2–3 minutes before use; spray water during sharpening

• Result: Even scratch pattern, low clogging, fast and controlled metal removal

• Maintenance: Easy to clean, pre-lapped and ready to use

Specifications:

• Working surface: 6 × 1" (150 × 25 mm)

• Abrasive thickness: 7 mm

• Blank size: 6 × 1" (160 × 25 × 3 mm)

• Total size with blank: 160 × 25 × 10 mm

  
  

Grit Conversion Table: