Are two angles really enough? Blade angles may vary depending on the style and manufacturer of your knife. For instance European knives have an angle of 11-22 degrees per side, while Asian knives have an angle of 10-18 degrees per side. With the KitchenIQ Angle Adjust Adjustable Electric Knife Sharpener all of your angles are covered. Simply turn the large knob to the appropriate angle and both the coarse and fine sharpening slots adjust accordingly to produce factory quality edges. If the factory angles are not known, simply use the clearly marked angles for European or Asian knives. Sharpening your knife to the factory approved angle will not only be a quicker process, but it will even prolong the life of your knife. Each of these electric sharpeners include the Large easy to use Angle Adjust knob, a heavy duty cast aluminum body, rubber hand grip for comfort and control, non-slip rubber feet for safety when sharpening, and a ceramic wheel cleaning brush.