The 3/8" O.D. x 5/8" O.D. Brass Compression Union - Chrome Plated from Braxton Harris is designed for connecting two different sizes of tubing in plumbing systems. This union features a durable brass construction with a chrome plating that provides both aesthetic appeal and corrosion resistance. Ideal for use in water supply lines, this compression union ensures a secure, leak-free connection. It meets industry standards for quality and performance, making it suitable for both residential and commercial applications.