This nipple drinker for duck each unit has a 360 degree stainless steel nipple head that will work from any angle. Good structure design---removable lower parts for easy cleaning. Item is easy to install in PVC pipe, a five gallon pail bucket or container.. Just simply screw in to your drilled hole. No experience necessary.. Light color design attracts fowl to fnd them fast to use, wether they are a day old or 5 years old. Exactly works great for broilers, layers, breeders, pullets, chicks, ducks and other game birds. They all love your waterer nipples.