REDIEDGE 3-POSITION SHARPENER ORANGE 30, 40 AND 60 DEGREE The 3-Position Stick knife sharpener is built with all three standard sharpening angles. The 30 degree inclusive angle provides the sharpest possible edge on filet and boning knives, the 40 degree inclusive angle is the most common angle used because it provides the perfect combination of sharpness and a long-lasting edge and the 60 degree inclusive angle is for use on heavy-shouldered knives and other popular cutting edges. The convenient "stick" design has been retained. It provides a sturdy grip when imparting the perfect edge on every knife every time. All the key components of the sharpener remain: the Duromite cutters, aircraft-grade aluminum with a special coating to provide corrosion and abrasion resistance, and the same rugged design.