This is an old "Osakana Uo Killer" (Fish Killer) product. It can be used to catch small fish in rivers, ponds, and lakes. I'm not sure if it was ever used, and it's still in its packaging. Please understand that this item has been stored at home for a long time, so please purchase it only if you are okay with that. [Category] Fishing Gear [Target Fish] Crucian carp, Pseudorasbora parva, bitterling, etc. Thank you.