Chef's Choice Model 1520 AngleSelect Diamond Hone Knife Sharpener-Brushed Metal br Click below to buy on Amazon: br Electric 3-stage knife sharpener for straight serrated single- and double-bevel knives br Puts a sharp edge on europeanamerican 20 degree and asian-style 15 degree knives br Patented flexible stroppingpolishing disks for a microscopically polished edge br 100-percent diamond abrasives sharpen and hone knife guides br Measures 12 by 6-15 by 6-25 inches 3-year limited warranty