1-1/2 National Standard Thread Hose Cap & ChainThe 1 1 2 NST Hose Cap & Chain is used for firmly and securely sealing fire hoses, hydrants, and other NST threaded connections. The attached chain ensures the cap stays connected, to prevent loss. Made from durable brass, this cap provides excellent resistance to corrosion, wear, and high pressure, making it ideal for firefighting, industrial, and various applications. Specification Value TYPE National Standard Thread Hose Cap & Chain DESIGN National