360 DEGREE ROTATION: Swiveling 360 degree at two pivot points prevents the hose from kinking, completes tool maneuverability and reduces operator fatigue. THREADS: 1/4 inch female thread NPT and 1/4 inch male thread NPT. This connector accepts both standard threaded joints and fast change adapters. WORKING PRESSURE: 1/4in basic body size, with a maximum working pressure of 150 PSI. Make sure you have better sealing straps. PRODUCT MATERIAL: Red aluminum makes the connector lightweight, and has a long service life. APPLICATION RANGE: 4 piece package. The swivel air hose connector is perfect for pneumatic air tools such as grinders, sanders,drills, and etc., Manufacturer: DongDong store