ALTSTONE FUKAMI is known for its excellent mud release and fast, responsive sharpening feel.
Even in higher grits, it produces a rich slurry that enhances control and cutting speed, offering a consistent sense of bite throughout sharpening.
Its well-balanced composition works beautifully with a wide range of steels — from stainless to carbon — delivering a comfortable, natural touch on every blade.
The soft formulation allows precise feedback, while the finish shows a gentle cloudy sheen reminiscent of natural stones.

“FUKAMI” brings harmony to sharpening — smooth, balanced, and precise.

Specifications

• Grit: #300 (Coarse)

• Abrasive: WA (White Alumina)

• Bond: Vitrified (ceramic bond)

• Size: approx. 180 × 60 × 18 mm

• Weight: approx. 470 g

• Recommended use: Chip repair, bevel correction, and thinning

• 10-minute water soak before use

※The knife (21 cm Gyuto) shown is for size comparison only.
※This listing is for the whetstone only.