Japanese Combination Sharpening Water Stone – 1000/3000 GritA dependable all rounder for keeping your edges true. The #1000 side (red ochre) handles general sharpening, restoring a clean, keen edge to kitchen and workshop tools alike. Flip to the #3000 (warm ochre brown) to refine and polish the difference is immediately felt in the cut. Soak for five minutes before use, and keep the surface wet with a light splash as you work.