This is handmade. Suitable for small birds such as finches, young birds, society finches, Bengalese finches, and Java sparrows. Entrance diameter: Approximately 7cm Depth from entrance: Approximately 14cm Nest hook is not included. Nest hooks are sold separately. It will be an additional 200 yen. If you would like one, please comment and I will adjust the price. The color of the nest hook is random. Desired colors are an additional 50 yen. As this is handmade, there may be slight individual differences. If you are concerned about minor details, please refrain from purchasing. m(_ _)m May your beloved bird and its owner have a happy time together! ☆*:.。. o(≧▽≦)o .。.:*☆