Water Saving - Precision Ball Valve Spring Switch with Seal Screw, When the chickens peck on the yellow trigger, the Chicken Waterer Valve will automatically release the water into the plastic cup. Each part is tightly connected so that no leakage occurs. Wide application - Suitable for chickens, pigeons, birds, quail and other pets. Ideal tool for domestic poultry or poultry farms. Your chickens are thirsty and want you to buy these poultry cups so that they have an automatic and constant supply of fresh water. Removable - Removable bayonet water bowl for easy cleaning and replacement. Always provide fresh, clean water to your poultry. Superior Quality - These poultry drinker cups are made of ABS material, heat resistance, low temperature resistance, chemical resistance, long service life.