Every chef knows the importance to having a razor sharp blades in their arsenal of cutlery. In the case of your knife this would be maintaining the knife's edge. This knife sharpener will give your kitchen knives a more detailed action as it removes the dull metal from the edge of the knife. This sharpening steel in made from hard T45 Carbon Steel that rates 49 HRC on the Rockwell Scale. A great value for chefs and home cooks!