All that is required is to wet the stone surface

Chosera should be used with water as a lubricant

💎Venev Orion 150

and the spine thickness spine is 5 mm

The stones are made of silicon carbide and are designed for the hardest steels (up to 65 HRC)

boride orange edm stone for edge pro Grit:320 All that is required isBoride 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