***Threaded Style*** Oasis Poultry Water Nipples, 5 Pack, Sanitary Water for up to 15 Chickens, Turkeys, Geese or Ducks A 5 pack of commercial grade poultry drinking nipples, THREADED STYLE mounting (10mm x 1.0mm thread size) Robust, commercial grade design allows access to valve parts if needed. (Must mount vertically) 5 nipples will keep a flock of up to 20 chickens or 15 turkeys well hydrated Build your own poultry watering system with ordinary hardware store parts - instructions included Fill you system from outside the coop - no more stepping in you know what first thing in the morning!!