This stone has a hardness that makes it easy to use for knives and other tools. It responds well, producing black slurry after just a few strokes, and provides a smooth, pleasant sharpening feel, resulting in a hazy finish. The sharpening feel is similar to that of a Mazyama Suita, but it cannot be specifically identified. It is an old stone of good quality. Size: 205 x 75 x 34