The Dynaswivel is a patented "universal-joint" that connects portable air tools to an air line. Swivels 360º at two pivot points allowing the air hose to drop directly to the floor while providing superb tool handling. Improves tool maneuverability, minimizes operator fatigue and extends hose l ife. Thread Size: 1/4" NPT (6mm) Air Flow Range (LPM): up to 33SCFM (9935)