Electric One-Step Knife Sharpener. This sharpener is a great and simple to use electric knife sharpener. It is compact, powerful, safe, fast and easy to use. And it sharpens all of your sporting, utility and kitchen knives; large and small, even electric, serrated and cleavers! The FireStone Electric features one-step precision sharpening. It positions and sharpens both sides of the blade simultaneously at the correct angle with the multiple diamond enhanced ceramic counter-rotating wheels that create a burr-free, razor-sharp hollow ground edge. An edge that's perfect for cutting, slicing and dicing. Sharpens with just a few strokes. Backed by a full one-year warranty. Black and red only. Designed for American electrical outlets. Voltage: 120V/60Hz.