Natural Nagura Stone for Sharpening Honing Waterstones Whetstones (12K-N70)</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>2.7" x 1.2" x 1.2" (70 x 30 x 30mm); 6.0 oz (180g); grit ~12000 (very fine)</li><li>Natural "Ocean Blue" nagura stone: used with full-size synthetic and natural sharpening and honing waterstones</li><li>Creates a slurry (creamy paste) on the waterstone surface for sharpening knives， razors， blades， chisels and other tools</li><li>Unclogs waterstone surface from metal micro shavings which inhibit sharpening; flattens the surface to eliminate the dish effect</li><li>Quarried from a now closed underwater mine near South Tsushima Island， Japan; golden stamp of authenticity; limited stock</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31Y1KBTsrCL.jpg' noproxy></br>