PACKAGE INCLUDED: 5 pcs pig nipple waterer with filter, 5 pcs water tank connector, 1 pc hole opener, 1 pc PTFE tape. Wrap PTFE tape around the threaded interface during installation and connect it to the pipeline to prevent leakage. Water tank connector thread: female 1/2 in, male 3/4 in. DIMENSIONS: Pig nipple total size: 2.4 inches length x 0.78 inches diameter, thread size 1/2 inch. Open-hole diameter is 26 mm. MATERIAL: Hog nipple waterer is made of stainless steel with superior rust resistance and excellent oxidation resistance. Water tank connector is made of brass for long-term use. No need to worry about rusting or breaking. AUTOMATIC DRINKING: When the pig touches the metal bar with its mouth, water flows automatically and stops when released, helping reduce water waste. The pig waterer prevents leakage (use PTFE tape), helps prevent bacterial contamination, and supports animal health. WIDE APPLICATION: Suitable for sows, boars, piglets, growers, finisher pigs, dogs, goats, and other livestock as an automatic water drinking solution. Note: Slight physical color variation may occur due to lighting or display differences; this does not affect functionality. Color: Silver. Material: Copper + Stainless Steel. Package Contents: 5 x Pig Nipple Waterer, 1 x Hole Opener, 2 x Raw Material Belts (color random, no specification accepted). Other products not included. Measurement error allowed: +/- 1-3 cm.