The AccuSharpA(R) 2-Step Carbide-Ceramic Knife Sharpener is an innovative tool that anyone can use. The pre-angled ceramic rods and diamond-honed tungsten carbide blades are exactly what you need to care for and maintain your blades. The two stages, carbide for coarse and ceramic for fine, allow for proper angle every time. FEATURES: 2 V-Notch Sharpening Slots Coarse Diamond-honed Tungsten Carbide Blades - Preset at a 21-Degree Angle Fine Ceramic Finishing Rods - Preset at a 21-Degree Angle Rubber Over-Molded Grip with Built In Feet for Stability