This feed tank base is made of heavy-duty polystyrene that is designed to withstand heat, cold, and cracks. The feed dish base can be easily assembled and disassembled with the base using its simple screw on design. This food tray features eight holes for feeding and inner ribs that minimize feed overflow and spillage. Feeder base combines with the Little Giant 1-Quart Screw-On Feeder/Waterer Jar (Item No. 690, sold separately) to make a gravity feeder for baby chicks and small birds. Features eight openings, with ribs to minimize feed overflow and spillage.