Perfect for baby chicks or small birds. Screw-on replacement jar fits the Little Giant 1-Quart Screw-On Plastic Waterer Base (Item No. 740, sold separately; 1-Quart Plastic Feeder Base (Item No. 806, sold separately); 1-Quart Quail Waterer Base (Item No. 730, sold separately); Metal Chick Feeder Base (Item No. 9810, sold separately); and Metal Chick Waterer Base (Item No. 9826, sold separately). Jar is molded from durable transparent polyethylene so the content level is always visible. 3.5 inch diameter by 7.25 inch high.