Compatible tube outer diameter D: 0.3 inches (8 mm); Connection diameter: R1/4; Fluid used: Air; Operating temperature range: 0 - 60 °C (non-freezing); Working pressure: 0 - 0.9 MPa; Material/finish: Metal parts: Brass + electrolytic nickel plating; Resin parts: PBT); Seal rubber: Nitrile rubber (NBR); Country of Origin: Japan. 3-290 7