Product Description O-Ago Lock 250mm. ● This is an auxiliary tool for collecting Dorcus titanus and Prosopocoilus inclinatus using a scraping stick during sap collection or cave collection. ◉ Also, when scraping behind the bark of high-altitude tree cavities, by attaching the O-Ago Lock before scraping, you can prevent losing sight of the stag beetle even if it falls from the tree! We recommend using it to reliably collect large Dorcus titanus and Prosopocoilus inclinatus!! ● Hook the ring onto the inner tooth of the stag beetle's mandibles, pull the string with the beads, and secure the mandibles. ★ This is only an auxiliary tool for the scraping stick, so do not collect using the O-Ago Lock alone. ※ If you try to remove the stag beetle from the tree cavity using only the O-Ago Lock by shaking or pulling, you may damage the stag beetle's mandibles or break its legs. In the worst case, the mandibles may break. This is only an auxiliary tool to prevent the stag beetle from escaping deep into the tree cavity and to collect it with a scraping stick. ● Use it when you cannot get the stag beetle out of the cave with just the scraping stick. Locking the mandibles prevents them from escaping deep into the tree cavity!! ○ Brass pipe ○ Cotton thread ○ ★ After locking the mandibles and collecting the stag beetle, when loosening the lock, first slide the push lock under the rubber cap to loosen the ring at the tip. ★ After locking the mandibles and collecting the stag beetle, when loosening the lock, first loosen the long string on the side of the grip to loosen the ring at the tip. ★ When collecting, pull out the tip of the ring about 2cm with your nail. We were able to make it cheaper by simplifying the construction, so please consider it.