Chart for good choice

You will always find your favorite grindstone.
A wide range of users, from first-time users to experienced sharpeners, can use this product comfortably.

― ​​​​​​​Grid size standard ( for your choice ) ―
220~320 grid size    rough stones ( to remove rust and nick from a knife blade)
400~1200 grid size    medium stone ( for dull knife)
200~4000 grid size    finishing stone (to finish beautifully)

A sharpening stone that you can use comfortably is the right sharpening stone for you.
Choose a wheel that you can use comfortably according to your physical strength, preference and depending on which tool to maintain.

Original Series

Series made with appropriate abrasives (WA, GC, PA, Zircon) to suit the preference of the sharpener.
Please refer to the chart to make your selection.

Tsurugi 400

Shouki 3000

Ajisai 1200

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AOI Series

Product series with increased toughness by adding cobalt to WA.
With a good balance of free and residual abrasive grains, it can be sharpened quickly while maintaining a firm hardness.

Aoi 400

Aoi 800

Aoi 1200

Aoi 2000

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Craft Knife Series

The original series of sharpening stones made into a compact size（180×60×25mm） for craft knives. This size is recommended for those who have trouble keeping a large sharpening stone in the kitchen.

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Give it's a try

How to sharpening