Chef&rsquo;sChoice 1520 AngleSelect Diamond Hone Professional Electric Knife Sharpener for 15 & 20degree Knives Fine Edge or Serrated Blades Precision Guided Sharpening Made in USA,3-Stage Silver Electric 3-stage knife sharpener for straight, serrated, single-, and double-bevel knives Puts a sharp edge on european/american (20 degree) and asian-style (15 degree) knives Patented flexible stropping/polishing disks for a microscopically polished edge 100-percent diamond abrasives sharpen and hone; knife guides Measures 12 by 6-1/5 by 6-2/5 inches; 3-year limited warranty