Multi-Functional Knife Sharpener Widely used for outdoor knives, fruit knives, fishing knives, serrated knives, etc. This kind knife sharpener feature1. Tapered round diamond coated rod for sharpening serrated and standard edges.2. Carbide blades make your dull knife edges sharp quickly. Ceramic rods give you a smooth edge.3. The rotating ceramic rod design extends the using life.4. Lanyard hole ...