Product Description O-Ago Lock 250mm. ● This is an auxiliary tool for collecting Dorcus titanus and Prosopocoilus inclinatus using a scraping rod when collecting sap or from tree hollows. ◉ Also, when scraping from behind the bark of high-altitude tree hollows, 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 large jaw, pull the string with the bead, 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 hollow 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 depths of the tree hollow and to collect it with a scraping rod. ● Use it when you can't get the stag beetle out of the hollow with just a scraping rod as shown in the photo. Locking the large jaw prevents it from escaping into the depths of the tree hollow!! ● The grip is about 60mm and the decorative thread is about 5mm, so it can be used as a guide for measuring stag beetles up to 80mm. ○ Brass pipe ○ Cotton 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 of the ring about 2cm with your nail. We were able to make it cheaper by simplifying the construction, so please consider it. ※ If you have any questions about how to use it, please contact us. We also have a video on how to use it. Then, have a good encounter with stag beetles, everyone!!