The SEALFAST 2-1/2" F NST X 1-1/2" M NST Plastic Coupling is designed for reliable fluid transfer in various applications. This coupling features a durable plastic construction that ensures longevity and resistance to corrosion. With a female National Standard Thread (NST) on one end and a male NST on the other, it provides a secure connection for hoses and pipes. The dimensions are optimized for compatibility with standard fittings, making it ideal for fire protection systems and irrigation setups. This coupling meets industry standards for performance and safety, ensuring a dependable solution for your fluid handling needs.