Features: 1.Made of PVC material, strong and durable. 2.You can easily open or close the water bottle for cleaning and filling. 3.Easy to install on wire cage and quick removal of it. 4.It doesn't get dumped as easily as other water bowls, so it keeps the water clean and without sundry, 5.Perfect for supplying water for different kinds of birds, such as parrots, African gray, etc. Specification: Condition: 100 percent Brand New Item Type: Chicken Waterer Automatic Material: PVC Plastic Color: As Pictures Shown ModelSize (cm/in)Capacity Application S 23x3/9.0x1.1 150ml Small and medium-sized parrot like Cockatiel etc. M 25x4/9.8x1.5 250mlMedium and large parrot like Africa Grey Parrot, etc. L 26x5/10.2x1.9 380ml Large parrot like Cacatua galerita, Amazona, etc. Purpose: Parrot pin fier type automatic feeding water. PackageList: 1 x Drinker2 xBuckle3 xGasket2 xScrew2 xNut Note Cleaning with boiling water before use. The copper nozzle size is the same and the capacity is different for distinguishing the size of large, medium and small.