Premium Stone Holder is made of metal

Oleic aсid (for experienced users only)

Tsushima Whetstones are used for fine sharpening on KME or Hapstone knife sharpeners

Atago (愛宕) Whetstone is mined in Japan

boride t2 series full stone set for edge pro bestseller Premium Stone Holder is madeBoride sharpening stones are used for sharpening knives on Edge Pro sharpeners. Boride offers a wide range of stones with different performance values and different rates of wear. Boride T2 series stones are made of aluminum oxide. 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 Pro stones that are 3 mm thick and are becoming a community standard.