12 Cups, 12 sets of screws to attach the drinker to wire screen, 12 "T" Coupling to the hose 
Very easy and simple to install almost on any mesh wire, 
These drinkers will help you allow to keep your cage ""Dry and with NO Smell of wet manure .
The Drinker can be used for all ages of birds they just need to FIT their Head and the animals will have water in abundance all Seasons.

We always have diverse Drinkers for the Cages if you don't see them don't hesitate to ask.