The NIBCO copper coupling is designed for connecting copper pipes with a secure stop, making it ideal for plumbing and water line applications. This reducing copper coupling features a sweat/solder fitting for a reliable and leak-resistant connection, suitable for both residential and commercial projects. The 3/8 in. x 1/4 in. size allows for easy transitions between different pipe diameters, and the pack of 25 ensures you have enough fittings for larger jobs. Made from durable copper, this coupling is corrosion-resistant and built to last, providing long-term performance in water supply systems. The solder/sweat connection type is compatible with standard copper pipes, making installation straightforward for professionals and DIY enthusiasts alike. This copper fitting is perfect for use as a 3/8 to 1/4 copper coupling, and is commonly used in water line repairs, remodels, and new installations. Trust the NIBCO brand for quality and reliability in your plumbing projects. This product is easy to install and maintain, making it a practical choice for anyone needing a dependable copper coupling solution.