Low-medium grit 400/1000 sharpening stone, made of high-quality corundum (Al2O3). Ensures exceptional results.

The hard side is used for sharpening serrated knives or blades with nicks, as it is designed for sharpening purposes.

The fine side restores the angle, but for high-quality knives, additional stones with higher grit should be used.

Equipped with a non-slip base for maximum safety during use.