This sharpening stone from King features a combination of 800 and 6000 grit Japanese stone. The large brown and tan sharpening stone provides a perfect edge with both fine and coarse grit on the same stone. It uses only water as a lubricant, so you don't have to worry about using oils or pastes. The stone comes in a plexiglass box which is perfect for protection or storage. This King combo sharpening stone will make an invaluable addition to your knife sharpening supplies.