The Blademedic Knife Sharpener is like having an entire sharpening kit right in your pocket, whether it's for a plain or serrated edge, gut hooks, and the like, the Blademedic has your knife's edge covered. This field repair sharpening kit includes four sharpeners to keep your knife sharp. The tungsten carbide slot is there to set an edge on an extremely dull blade in just 3-4 strokes. Ceramic sharpening rods will polish and finish an edge in just 3-4 quick strokes. If you have a serrated blade, the ceramic bar will sharpen even the smallest serrations. Use the tapered diamond rod for fast reconditioning and maintenance of plain and serrated edges, but it's also great for gut hooks.