The Dine a Chook Poultry Drum Drinker Single Outlet Lubing Cup 20L provides clean and hygienic water for up to 8 chickens/birds. If you have medium size backyard flock, the generous capacity means you have plenty of water for your chickens. Yes, you could save money and buy a cheaper drinker. However, buying a genuine Dine a Chook product is your guarantee of quality. Also available in a Twin Lubing Cup Drinker and an Extension Drinker that you can fill from outside of the coop!