Estone 3in1 Outdoor Hunting Fishing Pocket Sharpener Diamond Saw Hook Flat Edges Fishing Hook Knife Sharpener in a convenient pocket size with portable pen style Great for hunters - fishermen, campers and archers. Handy for most any cutlery / tool sharpening need. Ideal for kitchen, campers, hunters, or workmen; also great for touching up knives, serrated blades and scissors; Pocket knife sharpener with fine grit that features a D-shaped sharpening area with a groove for fish hooks. - Keep one in your tackle box, tool box and the kitchen drawer Flat Edges Serrated Edges