This well assembly is a reliable and durable product from a trusted brand in the HVAC industry. It has a 1/2" size and .375" inner diameter, with a length of 2 13/16". The Johnson Controls WEL16A-601R well assembly is designed to accurately measure temperature in HVAC systems, ensuring efficient and effective operation. Its high-quality construction ensures long-lasting performance and minimal maintenance requirements. This product is an excellent choice for HVAC service technicians looking for a dependable well assembly for their clients' systems.