Engineered and assembled in the USA, the Chefs Choice Hybrid 250 Electric Knife Sharpener uses a 3-stage process to sharpen all fine-edge, serrated kitchen, and household knives, as well as sports and pocket knives. Stages 1 and 2 use 100% diamond abrasives for shaping and sharpening the blades first 2 edge bevels. Stage 3 hones and polishes the blades third bevel using ultrafine diamonds for a razor-sharp, professional edge.Made in USA. Type: "Fillet Boards.