This is my first time trying out a natural Nagura stone and the results have been really good. I had a couple of Jnat stones to sharpen my chisels and plane blades. The results were good but I wasn't good with slurry so I thought I'd try this nagura. These change was instantaneous. I get a mud-like surface on a flat stone and my tools are sharp like the YouTube video guys. I can't believe what an upgrade this has been for me. Just wish I'd done it several years ago. Oh well, at least I improved for very little money. Will be buying more from this company. Price was fair, shipping inexpensive, and a very good stone.