This Johnson Controls product is a 1/2 well assembly with a 0.430 inch inside diameter and a length of 7 9/16 inches. The well assembly is designed to be used in conjunction with temperature sensors to accurately measure the temperature of liquids or gases in industrial applications. The high-quality construction ensures durability and reliability, making it suitable for use in harsh environments. With its precise measurements and sturdy design, this well assembly is an excellent choice for those seeking accurate temperature readings in their industrial processes.