Miller Jar Galvanized Feeder Base for Chick Baby 1qt 10-PackMiller 9810 Round Jar Galvanized Feeder Base 10 Pack helps you create gravity feeders for baby chicks using a 1 quart jar (jar not included). Each feeder base screws onto a Little Giant 1 Quart Plastic Screw On Feeder Waterer Jar (Item #690, sold separately) or a standard Mason jar. Made of heavy gauge galvanized steel for durability, with rounded embossed edges to help reduce chafing. Features 8 feeding holes. Size: 6" diameter x 2. 5" high per base.