Made in Japan.

These are the new Naniwa Professional series stones that were formerly called the Chosera 3k. At the boundary between fine grit finishing stone and medium grit workhorse this 3k Chosera water stone can fill several roles in the typical sharpening progression. For many kitchen applications a 3k edge is a versatile and durable edge for a wide variety of tasks. For enthusiasts looking to push the limits of keenness, a 3k stone can segue to much finer stones such as the 5k or even the 10k for the most refined edges possible. The Chosera stones are well regarded for cutting quickly, polishing to a high level or refinement, dishing slowly, and providing a pleasant feel while sharpening. A quick soak or splash of water is recommended for normal use. Don't perma soak them.