and This cup is a great way to provide fresh water, on demand to your birds. Filled automatically when birds peck at the built in plunger. Drinker cup is a breeze to clean,just disconnect cup. Can be used to expand an existing watering system, or can beattached to a bucket or a container of your choose to create a fed water system. Feature:Automatic, Built to last,Farm Products,Convenient,Best gift for cheicken Colour:Red Material:plastic Size:Approximately full length: 8cm, diameter: 4.8cm, height: 3.8cm Package Contents: 24 x Poultry drinking cup 24 x black screw 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.