Chicken Nipple Drinker 360 Screw-Lock (N3) for Automatic Water Feeder Poultry (Pack of 5) No Leak, Guarantee! with 360 side-to-side toggle action nipple for a more sanitary environment, high reliability providing for large healthy birds and dry floors. Easy-to-Use: Can be screwed on to Water Pipe or Bucket - The most popular "Screw-On" Type Nipple Standard connection interchanges with other brands Best Quality Materials: High precision stainless steel ball and pin, O-Ring Seal which stops water leakage is made of special grade of rubber, high resistant to the pipe cleaning liquids and high strength grade plastic materials Easy installation with/without Nipple Adaptor: (No thread tape is required with Nipple Adaptor) Approximately 5-10 chicks per nipple, and the distance of each one should be about 30-40 cm.