This 1/4 in NTP female thread is tough and durable. It is designed for secure and balanced connections. Air-tight connections and plated steel construction makes it reliable for professional jobs.6-ball coupler design for balanced, strong, secure connectionsCorrosion-resistant steel for long lifeSimplifies field installation by eliminating the need for thread sealant tapePre-applied thread sealant for a secure connectionPlated steel construction with drag guard for jobsite durability and reliability