NIBCO 1/2" C x C Solder-Joint Copper Union is a soldered copper fitting specially designed for copper-to-copper connections. It features a sweat/solder connection type, making it i for a wide range of plumbing applications. This copper union allows for easy disconnection and reconnection of copper pipes, providing a convenient and versatile solution for plumbing and other copper piping systems. It is commonly used when a temporary or serviceable joint is needed, ensuring reliability and ease of maintenance. Model Number: W02060D