Dexter's Edge-1 sharpener is a great economical way to maintain your knifes edge. This popular designed sharpener is compact and easy to carry or store. The Tungsten Carbide cutting heads are set at the correct angle for precision sharpening. Just 3 or 4 strokes and its sharp! Quick and easy! Dexter recommends regular use of this type ofsharpener to help maintain your edge.