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.