For over 10 years, our pig nipple drinkers have been used throughout the world. Both stainless steel and bronze. 1/2" bite with wrench flat, adjustable flow rate with three positionorifice, stainless steel spring and dome screen, industry standardthroughout the world, for sows, finishers1/2" bite with hex body, adjustable flow rate with three positionorifice. Hex allows for socket installation, ...