Thank you for viewing. This is a natural wood perch for insects, with a tree hollow (hideout) created. - Size: Height 22.0 cm, Width 17.5 cm Tree hollow entrance ① 7.0 cm x 3.0 cm Tree hollow entrance ② 4.0 cm x 2.0 cm (See photos 12 and 13 for details) - Material: Natural wood (Japanese oak) - Uses: Perch for insect breeding, hideout, feeding platform - Features: With a jelly placement hole on the top (4 cm in diameter). The tree hollow part and the base part can be separated and removed with screws. - For reference, a photo of a Japanese giant stag beetle (75mm) is included. (The Japanese giant stag beetle is not included in the product.) Japanese rhinoceros beetle Flat stag beetle