sharpest edge without excessive trouble or frustration and for an extremely long time

Product size: 150 x 25 x 10 mm (6" x 1" x 3/8")

Chinese Bluestone should be used with water as lubricant

Never dry Gokumyo stones near heat

boride pc stone for edge pro Grit:400 sharpest edge without excessive troubleBoride 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