Special valves. Chicken drink from special valves which release water directly into the chickens' mouth when it packs at the valve, keeping water of dirt and droppings. No more hanging your bucket and no more daily water bucket cleaning. Horizontal nipples use an O-ring as opposed to ball bearings and are designed not to ze up in winter. Longer metal part, this is an ideal improvement to help your chicken quickly learn to drink from chicken nipples. Premium material and easy to install. Made from ABS plastic and quality metal, and the horizontal side mount poultry nipple is stronger and easier to install. No more leakage -- By following our installation guideline, you will no longer have to worry about leaking with chicken water drinker. Practical feeder nipple, suitable for chicken, ducks, quail and other poultry. Works perfectly for chickens aged 2 weeks and older.