Barbed tubing connector RTU-PK-6/6 With barbed fitting for plastic tubing PP, PU, PR. Nominal size=5,3 mm, Operating medium=Compressed air in accordance with ISO8573-1:2010 [7:-:-], Note on operating and pilot medium=Lubricated operation possible (subsequently required for further operation), Pneumatic connection, port 1=for tubing, 8mm outside diameter, Materials note=Conforms to RoHS