Material: PlasticFilled automatically when birds at the built in plunger.The best way to water your chickens.10 drinker cup are included100% brand new and high qualityFarm Products The best gift for the chickenSize: app.9cmx5.3cmx4cm/3.54''x2.09''x1.57''Main Color: Red, as the picture shownQuantity: 10 PcBuilt to lastSelling pointCan be used to expand an existing watering system, or can be attached to a bucket or a container of your choose to create a fed water system.10 x Livestock drinking cupChickens yellow trigger to fill cupDrinker cup is a to clean,just disconnect cup.This cup is a great way to provide fresh water, on demand to your birds.