With this Chef'sChoice Electric Knife Sharpener CC312 you sharpen your knives in 2 steps and ready to use. In the first step you sharpen the knives in the diamond sharpening section again. The second step is to polish the blade and to maintain your knives on a daily basis. Both steps are electric, so you keep your knives fast and effective in a good condition and under the right sharpening angle. There is relatively little material removal, so you use the knife sharpener regularly without worries. The knife sharpener is suitable for both smooth and serrated blades with a European sharpening angle.