uxcell 4 Piece Pig Hog Drinking Watering Drinker Nipple Valve, Red Product name : pig drinking valve; material : stainless steel Color : silver tone, red; size : 75 x 21mm/ 3" x 0. 8" (l*d) Male thread die : 20mm; male thread size : 1/2 PT Weight : 316g Package content : 4 x pig drinking valves