198H Electric Knife Sharpener with Diamond WheelsSHARPAL 198H Electric Knife Sharpener is designed with 3 stages to ensure a razor sharp edge on most double beveled straight edge and serrated knives. Simultaneous grinding of both blades saves much time and ensures that both blades are sharpened the same number of times. It provides a professional sharpening experience right in your kitchen. With advanced technology, this sharpener will not de temper the blade, ensuring the longevity and durability