Terminal socket KDV-PK-4 For multi-tube connection of plastic tubing with 2, 3 and 4 mm ID. Nominal size=3,4 mm, Operating medium=Compressed air in accordance with ISO8573-1:2010 [7:-:-], Note on operating and pilot medium=Lubricated operation possible, Corrosion resistance classification CRC=1, Pneumatic connection=For tubing outside diameter 6 mm