NANIWA Extra Fine Sharpening Super Stone 12000 S1-491

The S1 Super Stone series is equivalent to the S2 Super Stone series, with the only difference being the smaller stone thickness of 10mm. This series of stones is an alternative at a lower price for grinding operations where only a small amount of material needs to be removed (suitable for polishing stones with a fine grain). Naniwa has changed the name and packaging of this series of grinding stones (first the Super Stone series only for Japan, then the Specialty series for Europe, and now Super Stone worldwide), but the stones themselves have remained unchanged. - JIS grit: 12,000- extra fine stone for final polishing- Japanese grinding stone for use underwater- dimensions: 210x70x10 mm- abrasive: white aluminum oxide- manufactured by Naniwa factory in Osaka- made in Japan