Living World Maize Peel Finch Nest provides a comfortable and secure shelter for nesting pairs and their young. Made of natural maize peel, the cozy nest encourages natural breeding. The nest comes complete with a metal hook for easy installation on the bird cage wiring. For indoor use only. Size: 10.5 cm (4.1") x 13 cm (5.1") x 15 cm (5.9"). Nest opening: 5 cm x 7.5 cm (2” x 3”).