The Hoteche knife sharpener is a versatile tool that incorporates a two-step sharpening process to ensure your knives are razor-sharp. The first stage uses a diamond grinding wheel, which is known for its durability and abrasive properties, making it ideal for restoring the edge on dull or damaged knives. The second stage employs a ceramic grinding wheel, which is finer and less abrasive, perfect for honing and polishing the knife's edge to a smooth finish.