Three 9 inch dish drinkers. Operates on normal water pressure 5 to 50 PSI. If used with a gravity flow tank, the tank must be at least 5 feet above the drinker. May be used for all chicks after 7 to 10 days of age, as well as for grown birds. Drinkers are 9" diameter, 4" overall height, giving 28" of watering space each.