Thank you for viewing. This is a natural wood perch for insects, with a tree hollow (hideout) created. - Size: Height 22.5cm, Width 20.0cm Tree hollow entrance 5.5cm x 2.0cm (See photo 11) - 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 surface (4cm in diameter). For reference, photos of a Japanese rhinoceros beetle (75mm) are included. ※The Japanese rhinoceros beetle is not included in the product. Japanese rhinoceros beetle Flat stag beetle