Water stone for sharpening bonsai tools. Grit is course (220) or fine (700).
Note: Each water stone comes with a secondary stone used to make powder that assists with the sharpening process. See the following video by Kaneshin for a demonstration of how to prepare your water stone.
Size: 3" x 8.375"
Grit (Course): 220 (secondary stone: 180)
Grit (Fine): 700 (secondary stone: 400)
Made in Japan by Kaneshin