Save Water: Adjustable flow rate, save water and labor. Works great with your entire barn watering system. No more freezing and no more waterers, when the pig's mouth touches the metal bar, the water will flow out automatically and close automatically when it comes out. Widely Used: This pig nipple water dispenser is perfect for sows, piglets, cows, cattle, horses, pigs, sheep and other domestic animals. Package Included: 5 x Pig Nipple Waterers