made of corundum
The corundum whetstones with #3000 and #6000 grit are designed to further refine the cut of the diamond side of the sharpener. When simply screwed onto the sharpener, you can quickly sharpen your high-quality kitchen knives with fine grit to maximum sharpness. The stones can be used without water. When the sharpening process is completed, the knife is wiped over the HORL Leather to achieve the final sharpness.