RuiLinXin Red 20 Pack Fowl Water Nipple Drinker Chicken Feeder Poultry Hen Screw In Style 20 Screw in style chicken water nipples Create your own custom sanitary waterer from PVC or plastic containers Each nipple has a 360 degree stainless steel nipple that will work from any angle Use drill bit size 11/32 at low rpm for PVC, bucket or container with thick plastic wall Use one nipple for every 3 chickens