Product Description O-Ago Lock 250mm. ● This is an auxiliary tool for collecting Dorcus titanus or Prosopocoilus inclinatus using a scraping rod during sap collection or cave collection. ◉ Also, when scraping under the bark of high-altitude tree cavities, by hooking 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 or Prosopocoilus inclinatus!! ● Hook the ring on the back of the inner tooth of the stag beetle's large jaw, pull the string with the beads, and secure the large jaw. ★ This is only an auxiliary tool for the scraping rod, so do not collect using the O-Ago Lock alone. ※ If you try to take out the stag beetle from the tree cavity using only the O-Ago Lock by shaking or pulling, you may damage the stag beetle's large jaw or break its legs. In the worst case, the large jaw may break. This is only an auxiliary tool to prevent the stag beetle from escaping into the back of the tree cavity and to collect it with a scraping rod. ● Use it when you cannot take out the stag beetle from the cave with only the scraping rod. Locking the large jaw prevents it from escaping into the back of the tree cavity!! ○ Brass pipe ○ Octopus thread ○ ★ After locking the large jaw 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 large jaw 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 ring about 2cm with your nail. We were able to make it cheaper by simplifying the construction, so please consider it.