It is used to remove burrs and polish the blade after sharpening. We recommend this stone for giving razor blades a final sharpness.
Naniwa's Super* series sharpening stone enables quick and efficient sharpening of Japanese knives. This stone is a "splash-and-go" type, meaning there's no need to soak the stone in water before sharpening; simply sprinkle a little water on the surface of the stone and begin sharpening.