The SEALFAST 4"X2-1/2" NST Storz to RL Swivel Female fitting is designed for high-performance applications requiring reliable connections. This fitting features a durable construction that ensures longevity and resistance to wear. With a 4-inch diameter and a 2-1/2 inch NST (National Standard Thread) connection, it is ideal for fire protection systems and industrial applications. The swivel design allows for easy maneuverability and installation, making it a versatile choice for various setups. This fitting meets industry standards for safety and performance, ensuring compatibility with existing systems.