PACKAGE INCLUDED: 5 pcs pig nipple waterer with filter, 5 pcs water tank connector, 1 pcs hole opener, 1 pcs 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. DIMENSION: Pig nipple total size: 2.4 inch length x 0.78 inch diameter, thread size 1/2 inch. Open-hole diameter is 26 mm. MATERIAL: Hog nipple waterer is made of stainless steel, offering 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 (when used with PTFE tape), helps prevent bacterial contamination, and promotes healthy hydration for livestock. WIDE APPLICATION: Suitable for sows, boars, piglets, growers, fattening pigs, dogs, goats, and other livestock as an automatic water drinking solution. NOTE: Slight physical color differences may occur due to lighting and display settings; this does not affect functionality. Color: Silver. Material: Brass and stainless steel. Package Contents: 5 x Pig Nipple Waterer, 1 x Hole Opener, 2 x Raw Material Belts (color and style may vary). Other items not included. Measurement error allowed: +/- 1-3 cm.