400 Grit: Used on damaged knives, For rough grinding fix big gaps restore sharpeness to repair damaged or chipped edges.
1000 Grit: It can quickly sharpen the small edge of the knife, sharpen knives and tools that are not very dull.
3000 Grit: Daily use whetstone, Make edge of most knives and tools extremely sharp.
8000 Grit: For ultra-fine finishing and to refine your blade, polish edge and make it smooth and bright.