These poultry nipples transform a standard bucket or PVC pipe into a poultry watering device. Nipples are easy to install and help keep water clean and prevent disease. Each nipple accommodates up to 4 birds. Nipples should be mounted vertically. Recommended for adult birds only. Keeps water clean and can help prevent disease Easy to install Each nipple accommodates up to 4 birds Vertical mounting / gravity feed only 4 pack