With the Zwilling Sharpening steel (diamond coating, oval), your dull knives become like new again. By drawing the knife blade against the steel at an angled position, you quickly restore that edge sharpness. A sharp knife makes most tasks easier, and cooking becomes significantly more enjoyable. This is a tool for both professional chefs and home cooks. For those with high-quality knives made from really hard steel, diamond sharpening is the best option as it is strong enough.