uxcell Stainless Steel Pig Livestock Nipple Drinker Waterer 75mm Long 2pcs Product Name: Nipples Water Drinking; Color: Red,Silver Tone Size: 75 x 21mm/ 3" x 0.8"(L*D); Material: Stainless Steel, Plastic Package Content: 2 x Nipples Water Drinking Weight: 162g Thread Size: 20mm/1/2BSP