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Sigma Power 'Select II' Stone 6" x 1"


JIS Grit: 400


Abrasive Aluminum oxide
Available Grits 📊 Grit Chart
240 JIS C
400 JIS M
1200 JIS F
3000 JIS EF
6000 JIS UF
10000 JIS UF
3000 JIS EF
Bonding Vitrified bonding
Country of Origin Japan
Extra Material Mounted on aluminum blank
Form Factor Edge Pro
Lubricant Water
Thickness of Abrasive 5-6 mm
Total Thickness 9 mm
Working Surface 152 x 25 mm (6" x 1")


Sigma Power Select II sharpening stones are used for sharpening knives on Hapstone and Edge Pro knife sharpeners. All Sigma Power Select II stones are 5-6 mm thick and are mounted on high-quality aluminum blanks.

Select II is premium sharpening stone series of Sigma Power. Select II are universal but designed to sharpen the hardest steels. Select II stones are composed of aluminum oxide abrasive with the minimum bonding of high hardness. The dishing of Select II will be very low.

Select II is preliminarily lapped and does not require lapping after purchase.

Select II should be used with water as a lubricant. Soak Select II stones in water for 5 minutes before sharpening. Never store Select II  stones in water. Never dry Select II stones near heat.