Our chicken water cups automatically discharges water according to the amount of water in the bowl, and it will maintain a constant water state, So your poultry can drink clean water as long as there are water in the bucket.You do not worry about when you are out of town or on vacation. The -sensing automatic valve feeds water. The simple and ingenious design allows the poultry to drink clean water. The simple structure ensures that it will not be damaged for years of use. This device is not suitable for high pressure tap water pipelines EASY TO INSTALL: Create an automatic chicken waterer in minutes. Use the included bit, push the chicken poultry drinker in, screw wingnut tight, fill with water. size: 4 x 3.5 x 6cm Material: plastic cement colour: red Package Contents: 5 x water cup 1 x bit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.