Universal Angled

Atoma Diamonds are used for sharpening knives on Hapstone

Never dry stones near heat

Washita stones should be used with one of these lubricants:

What is the difference between Gritomatic Silicon Carbide and Boride CS-HD

boride ruby stone for edge pro Grit:220 Universal AngledBoride Sharpening Stones are used for sharpening knives on Hapstone Pro sharpeners. Boride offers a wide range of stones with different performance values and different rates of wear. Boride stones are made of aluminum oxide, with the exception of CS HD series stones, which are made of silicon carbide. All Boride stones are 6 mm thick and are mounted on high quality aluminum blanks. Stones that are 6 mm thick offer a longer life cycle than stock Edge