The WÜSTHOF 240/1000/3000-Grit Tri-Stone Sharpener uses 240 grit for pre-sharpening and small nicks, 1000 grit for refining the edge, and 3000 grit for polishing and finishing.
- 240 grit suits duller blades and edge setting.
- 1000 grit restores a finely sharpened edge.
- 3000 grit refreshes or finishes a razor-sharp edge.