Outer diameter of screw: 20.3 mm; Applicable pipe inner diameter: 20mm; Overall size: 64 x 21mm. Won't hurt the mouth! ✨️✨Free shipping & anonymous delivery✨️✨ #Click here for a list of products from ☆SMILE·͜·Shop☆✨☜ #Click here for a list of pet supplies from ☆SMILE·͜·Shop☆✨☜ ----------------------------------------------- 【Product Description】 ★Please select the correct screw size before purchasing! ★This is a device for supplying water to poultry, suitable for pigs, sows, cows, dogs, and other animals. Color: Silver; Material: Stainless steel body, plastic hat; Outer diameter of screw: 20.3 mm; Applicable pipe inner diameter: 20mm; Overall size: 64 x 21mm (L*W) Made of stainless steel, rust-proof, corrosion-resistant, and smooth edges won't hurt the pig's mouth, ensuring a long lifespan. Its smooth interior allows liquids to flow out smoothly without causing sediment. ★This accessory can adjust the flow, effectively save water and labor, and reduce the supply of artificial water. Poultry fountains can work with barn watering systems. This drinking system is simple in structure, easy to use and maintain, and does not leak water. It comes with a filter. Insert the drinker into the pipe. Water automatically flows out when the pig's mouth touches the strip and automatically stops when it is removed. uxcell Pig Waterer Automatic Poultry Drinking Feeder 12.7mm PT Stainless Steel Plastic Hat Long Rod for Sow Drinking Water Silver Pack of 4 (4-36)6061★★★★