Air hose swivel connector 1/4″ NPT flow control

Milton S657-2 is a compact, in-line air hose swivel connector with built-in flow control designed to keep hoses from kinking at the tool and to let you throttle or shut off airflow right at the connection. Its dual-axis 360° swivel lets the hose follow tool movement, improving ergonomics and reducing strain. The connector uses 1/4″ FNPT threads, is rated to 150 PSI, and supports up to 40 SCFM—ideal for most shop pneumatic tools when used on standard 1/4″ lines. Not for use on percussion/impact tools unless a whip/snubber hose is installed between the tool and the swivel.