Naniwa Whetstone #220 Super Stone 21x7x1 cm S1-402

The coarsest sharpening stone in the Super Stone S-1 series, offering fast metal removal. Ideal for the initial shaping of your knife’s blade.

- Grit: 220 - Very coarse stone for basic blade shaping - Japanese water stone - Dimensions: 210 x 70 x 10 mm - Abrasive: White aluminum oxide - Manufactured at the NANIWA factory in Osaka, Japan - Made in Japan

S1 Super Stone Series

The S1 Super Stone is a series of sharpening stones specially designed for a perfect finish. These stones offer excellent polishing results and maximum sharpness for your knife’s blade. They remain flat and intact over time and provide a sharpening experience similar to that of soft natural stones. They are ideal even for sharpening hard carbon steel.

Stones in the Super Stone series require significantly less soaking time—often a simple spray of water is enough. Aluminum oxide (corundum) is the abrasive material used. The S1 designation indicates a 1 cm thickness of the stone.