Thank you for viewing. This is a natural wood perch for insects, with a tree hollow (hideout) created. - Size: Height 19.0cm, Width 15.0cm Tree hollow entrance 5.0cm x 2.5cm (See photo 13) - Material: Natural wood - Uses: Insect breeding perch, hideout, feeding platform - Features: The bottom is split, and the bottom can be removed with screws. A jelly holder hole is on the top. (4cm in diameter) For reference, a photo of a Japanese rhinoceros beetle (75mm) is included. ※The Japanese rhinoceros beetle is not included in the product. Japanese rhinoceros beetle Flat stag beetle