Premium Material: These poultry nipples are made of hard plastic, which is stronger and more durable, will not harm even overexposure to sunlight. Longer Metal Parts |: The long water lever is made of 304 stainless steel. It is a perfect improvement that can help your chicken learn to drink water from chicken nipple fast. Keep the water clean: It can always provide fresh water to the herd, keeping the water free of dirt and hardness. No more ventilation: you no longer have to worry about drinking water. This product is a quick and easy way to keep poultry watered which is very easy to install on the water pail. Wide Applications: These high quality poultry nipples are suitable for chickens, ducks and other poultry.