The Milton Male A Style Coupler Plug is an essential component for efficient air hose connections, featuring a 1/4" NPT male thread size. Designed for compatibility with the ARO style interchange series, this coupler plug is ideal for various industrial applications. Constructed from robust steel, it ensures durability and longevity under demanding conditions. Whether for automotive or industrial use, this coupler plug provides a secure and leak-free connection, making it a vital addition to any air hose system.