These are easy to use to make an anpproximatelt 2-3k edge for toothy finishes on knives that do not benefit from a finer finish or as use in a progression with other finer stones. 

These are lacquered to prevent them from falling apart, but it is important not to soak these, similar to other naturals.

Brand: Tanaka Toishi 田中砥石工業所
Product Type: Natural Stone
Producing Area: Tsushima-Nagasaki/ Japan
Soaking Requirement: Not required
Size: 212 x 84 x 52mm
Weight: 2400g