Package Contents: You will receive 4 automatic poultry waterers, each measuring 3.94 x 2.56 x 1.57 inch / 10 x 6.5 x 4 cm, connection port size is 9 mm. It provides enough clean and sufficient water for poultry without wasting water. Quality Material: Automatic chicken waterers are made of quality plastic, fine workmanship without burrs, round surface and smooth will not scratch your poultry's mouth. The thick material makes the product durable, can be used for a long time. Automatic Tumbler Drinker: No need to add water to the chicken anytime. Automatically add or stop water based on gravity. Just fill the bucket, then these water cups will automatically supply drinking water. Provide fresh water to poultry. Easy to Install: This automatic water dispenser is easy to operate, you can connect the bucket and the hose. Just plug the chicken waterer into the bucket and tighten the wing nut. Wide Application: Our automatic waterer is an ideal feeding tool, suitable for chickens, ducks, geese , birds, turkeys, parrots, quail or other poultry. Widely used in farms, chicken farms, home use, to ensure sustainable and healthy water supply for poultry.