NANIWA Sharpening Stone 220 S1-402

The S1 Super Stone series is equivalent to the S2 Super Stone series. The only difference is the smaller thickness of the stone, which is 10 mm. 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 fine grit). 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: 220 - very coarse stone for basic edge shaping - Japanese waterstone for grinding - dimensions: 210x70x10 mm - abrasive: white aluminum oxide - made by Naniwa factory in Osaka - made in Japan