Yunt Double Feeder Drinker Poultry Drinker Cup Water Drinker For Chickens Hens Ducks Chicks,etc. Materials:Plastic;Suitable for: The pipe diameter is 25mm(0.98inch),length is 9cm(3.54inch); Easy and safe to use, very convenient, the best designed to water chickens; The best way to water your chickens. Great for all breeds of poultry; For home and commerce chicken poultry farms use; They drink from the cup, which allows the right amount of water to come into the cup.