This Diamond pen sharpener, coated with a special mix of diamond abrasives, is at home in a pants pocket, a tackle box, or a backpack, and can quickly sharpen knives, hatchets, and even larger bush blades with very little hassle. Its unique shape makes it perfect for anything including plain-edge hunting knives, serrated diving knives, fishing hooks, fillet knives, and, if you’re really ambitious, garden shears too! The two-part design includes a sharpening stone which fits securely into an anodized aluminum sleeve for easier transport and an excellent grip while making your knives that much sharper. -480 Grit -Good for Plain or Serrated Blades