Suehiro is a Japanese company known for its high-quality water stones that can be used to sharpen your hand tool blades. The softer surface of these stones allows the surface to wear away more quickly, continuously exposing fresh abrasive. The result is a consistent sharpening surface and a superior sharp edge to your blade. The 1000x6000 is a combination stone featuring a 1000-grit medium finish surface on one side, and a 6000-grit surface on the other for fine finishing.