The Chef's Choice Electric Knife Sharpener CC120 / 31 has a sharpening angle of 20 degrees, also called a European sharpening angle, and is suitable for both smooth and serrated knives. You can easily grind meat knives, but also shreds and bread knives. The 3 different phases ensure that grinding is quick and easy. You only use the first phase for very blunt knives. Grinding is the second phase and you use this to sharpen your knives. In the third phase you polish your knives, this ensures a nicely finished cut.