Water SavingSwitch Valve Spring Precision Ball With Seal Screw, When The Chickens Peck The Yellow Trigger, The Drinker Valve To Press. Chicken Automatically Releases Water Into The Plastic Cup. Each Part Is Tightly Connected So That No Leakage Occurs.High QualityAdopt Quality Abs Material, Safe And Non-Toxic, Strength To Heat Resistance, Low Temperature Resistance, Chemical Resistance, Good Toughness And Anti-Aging, Designed With The Soft And Smooth Surface, Won'T Scratch Your Pet'S Mouth. Spring Is Struck. No Need To Clean Or Refill Frequently And Are Not Subject To Damage. Contamination, You Save Time And Effort.Easy To Clean. InstallRemovable Bayonet-Type Water Bowl For Easy Cleaning And Replacement, Convenient And Practical. Combinations Of Fittings Can Be Used To Extend An Existing Sprinkler System, Or Can Be Attached To A Sprinkler System. A Bucket Or A Barrel To Create A Powered Water Trough By Gravity.Wide ApplicationSuitable For Chickens, Pigeons, Birds, Quails And Other Pets. Ideal Tool For Home Or Chicken Farms. Your Chickens Are Thirsty And Want You To Buy These Poultry Cups So They Have A Constant, Automatic Supply Of Fresh Water.