Large sized Aiiwatani koppa that is easy to use, fast cutting with a buttery feeling that makes a hazy kasumi finish. Makes a great bitey but refined edge, highly recommended for a toothy polish or as a pre-polishing stone for a much finer, harder natural. Very fast cutting.

Aiiwatani:

A ‘Higashi-Mono’ (Eastern Mine) whetstone that is close in proximity to Takashima and Wakasa, two mines known for their high density stones. Aiiwatani are great shiage-toishi(fine stones) when you are looking for a refined edge. Typically more mellow in cutting action, but this can lead to a cleaner polish.

Asagi:

This aesthetic term refers to the general color of the stone. Typically, Asagi stones are grey, light blue, greyish-blue/green, and tan. They are usually quite clean stones that are on the harder side. However, softer Asagi stones are great for knife polishing.

Goma:

This aesthetic quality looks like tiny black dots, or little sesame seeds in the stone. This quality typically translates to having a fast cutting speed.

Namazu:

Translating to ‘cat-fish’, this aesthetic quality looks like white blotches on the stone. Usually this quality has a great sharpening feel that is smooth and tactile. 

Dimensions: 163mm long 80mm across 35mm thick

Weight: 1078 grams