Little Giant Plastic Feeder Base is designed for use with a screw-on feeder jar to provide smaller poultry animals, such as small birds or baby chicks, enough to drink. It is constructed of heavy-duty polypropylene which guarantees good quality and durability. It features eight wide holes to accommodate multiple animals at a time, and it has inner ribs to help reduce overflowing and spills. Its screw-on design is easy to attach to let you provide a gravity-feeder to animals without any hassle. It is compatible with Little Giant 1-qt. Screw-On Feeder model no. 690 (sold separately). This has 1 qt. capacity and it measures 6.375 inches in diameter and 2.5 inches high.