Bird Sink (4 points tee pipe + small red bowl )*6pcs Water-SavingPrecision ball valve spring switch with gasket screw, when chickens peck the yellow trigger, the chicken waterer valve 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, heat resistance, low temperature resistance, chemical resistance, good toughness and anti-aging, designed with the mellow and smooth surface, not scratch your pet's mouth. Convenient UseImmediately pour water into the cup when the spring-loaded is bumped. No need to clean or refill frequently and are not prone to contamination, save you time and efforts. Easy to InstallBayonet type removable water bowl for easy cleaning and replacement, convenient and practical. Fitting combinations can be used to expand an existing watering system, or can be attached to a bucket or barrel to create a gravity fed waterer. Wide ApplicationSuitable for chickens, pigeons, birds, quail and other pets. Ideal tool for home or chicken poultry farms use.Your chickens are thirsty and want you to buy these poultry drinking cups so they have a constant, automatic supply of fresh water.