10 Chicken Poultry Automatic Water Drinking Nipple Feeder Cups Nipples Chicken Water Cups with Float and 11/16" PVC brackets Recommended 2 to 3 birds per each drinker cup Ideal for broilers, breeders, layers, pullets, ducks and game birds. Use with low pressure systems only The low amount of pressure allows the right level of water to come into the cup