This professional dimaond hone electric knife sharpener incorporates 100% diamond abrasive disks in stage 1 and a revolutionary flexible polymer stropping (polishing) disk in stage 2 to sharpen and polish straight edge and serrated kitchen knives to razor sharpness in seconds. It is safe for all alloys and never detempers. The user friendly sharpening system features a powerful motor, 2-stage sharpening, precision angle guides and a built-in abrasive cleaning mechanism. This sharpener can withstand much use, even enough for a smaller commercial kitchen. One year limited warranty. Made in USA.