This combo set includes a fishing nail knot tying tool, a waterproof operation guide, a hook cleaner and a zinger retractor, specially designed for fly fishing. The zinger retractor keeps your tool easily accessible at your waist when fishing, avoiding losing it. The hook cleaner helps you quickly remove fishing residues and dirt from hooks to keep them functional. With compact size, it's ideal for outdoor fishing trips. It's a perfect practical gift for male fishing enthusiasts, and also great as a stocking stuffer for fishing lovers.