This knife sharpener has 5-different sharpening stages, which can efficiently sharpen various kitchen knives. The "SHARPEN" stage can reshape the blade edge, the "DAILY PREP" stage is used for daily honing, and the "DAILY FINE" ceramic stage can polish the knife to an extremely sharp state. In addition, there are special and independent slots for sharpening bread knives (serrated blades) and scissors. It is made of genuine tungsten steel, resin diamond, 1000# and 400# ceramic materials, which makes it sturdy and durable. The non-slip base and stable clamp can fit knives of various sizes, and it is not easy to be damaged even after years of use. With its unique and user-friendly design, the "DAILY PREP" slot uses the new resin diamond material. Even for knives made of various steel materials, including serrated knives and Santoku knives, the blade surface will not be damaged during sharpening. It is quick and easy to use. The attached detailed instruction manual can help you understand the condition of the knife and guide you to choose the correct sharpening slot, allowing you to easily sharpen the knife to an extremely sharp state, providing assistance for your kitchen cooking.