Diamond stones set (4 pcs.)

Diamond set of 4 pieces.
Includes 80/63, 50/40, 40/28, 28/20 µm (150, 280, 500, 600 GRIT).
The stone are used for sharpening knives and tools.
The stone are coated on both sides with a triple layer of diamond coating with the same grain size on both sides. Diamond concentration 100%