Chef&rsquo;sChoice 120 Diamond Hone EdgeSelect Professional Electric Knife Sharpener for 20-Degree Edges Diamond Abrasives Precision Guides for Straight and Serrated Knives Made in USA, 3-Stage, White SHARPENER with precision angle control guides that eliminate guesswork and ensure hair-splitting sharpness time after time STAGE 1 and stage 2 form the first and second bevels of a durable, arch-shaped edge. Stage 3, a revolutionary flexible stropping disk creates an ultra sharp polished third bevel DIAMONDS 100 percent diamond abrasives in stages 1 and 2 UNIQUE stropping and polishing in stage 3 for hairsplitting sharpness WORKS for gourmet chef's knives, butcher knives, sporting knives, serrated knives, and pocket knives EASY TO USE compact unit that anyone can put astonishingly sharp, long-lasting edges on knives in seconds RESILIENT feet hold the unit securely to your work surface 3-year household warranty