Thank you for viewing. This is a natural wood perch for insects, with a tree hollow (hideout) created. - Size: Height 12.0 cm, Width 12.0 cm, Tree hollow entrance 5.0 cm x 2.5 cm (See photo 8 for details) - Material: Natural wood (Japanese oak) - Uses: Insect breeding perch, hideout, feeding platform - Design: Natural wood texture - Features: With a jelly holder hole on the top (4 cm in diameter) - For reference, a photo of a Dorcus hopei binodulosus (75mm) is included. (The Dorcus hopei binodulosus is not included in the product.) Dorcus hopei binodulosus Prosopocoilus inclinatus Japanese rhinoceros beetle Kuarium (aquarium for beetles) Hollow