Chef’s Choice 1520 Diamond Hone AngleSelect Professional Electric Knife Sharpener [House & Home]The Chefs Choice 1520 Diamond Hone AngleSelect Professional Electric Knife Sharpener is engineered to put a razor sharp edge on all quality knives! With this one sharpening system, you can sharpen both 20 degree and 15 degree class knives. This patented advanced technology electric sharpener can restore and recreate both, a 20 degree edge for traditional European and American style knives and a 15 degree edge for Asian style knives and contemporary