The SEALFAST 1/2" X 3/8" Reducing Coupling is made from premium 316 stainless steel, providing superior resistance to rust and corrosion. This coupling is specifically designed to connect pipes of different diameters, making it essential for various plumbing systems. Its durable construction ensures it can handle high-pressure applications while maintaining a secure seal. The coupling adheres to industry standards, making it suitable for both commercial and residential installations. With precise threading and dimensions, it guarantees a reliable fit for NPT connections.