3Pcs 1/2BSP Thread Automatic Pet Pig Cow Cattle Nipple Drinker Waterer Product Name : Pig Nipple Drinker;Color : Silver Tone Material : Stainless Steel;Thread Diameter : 20mm/1/2 BSP Total Size : 64 x 24mm/2.5" x 0.9"(L*Max.D) Weight : 236g Package Content : 3x Pig Nipple Drinker