Small ink stone makes it easy to carry. A good balance of roughness, thinness, firmness and softness, the colors are black or dark indigo, rich sheen and smooth stone skin, and beautiful as a tool is also attractive. Very detailed ink ink. Oil smoke and pine smoke ink are great for both ink. Even in the case of light ink works, the better dispersion of the ink and gradually dilute it with water after polishing it to improve the ink color.