The Prevue Birdie Basics Glass Fountain Feeder provides a constant source of food for your bird, allowing easy feeding whenever it feels the need. This feeder is a universal fit for all small and medium Prevue cage models. Universal feeder for small and medium bird cagesProvides a constant source of foodEasy to install and clean Dimensions: 6" High (Holds 1.8 oz) Note: Aassorted colors - let us choose one for you!