DURABLE MATERIAL: This automatic pig waterer with nipple is made of quality stainless steel, rust-proof, corrosion resistant and sturdy. WATER-SAVING AND EFFORT-SAVING: When pigs' snout hit the water nipple, water will flow out automatically, and stop when their snout is away, so you don't have to keep refilling the bowl and the livestock can access fresh water whenever they like. EASY TO USE: 2 holes at the bottom are convenient to attach this waterer to the wall (screws are not included); polished and curved edges to ensure safety. PRODUCT SIZE: Product size: 8.27" Diameter x 5.9" Height; connect with 1/2" water hose, great for making a gravity fed system. Dear customer, Thank you for choosing our products. If there is any problem with our products, please contact us through the order information. We will be happy to serve you and solve it for you as soon as possible within 12 hours, thank you