Quick Connector Ck-M5-Pk-3 Male Thread with Sealing Ring, Metal Version. Nominal Size=2 Mm, Type of Seal On Screw-In Stud=Sealing Ring, Assembly Position=Any, Maritime Classification=See Certificate, Operating Medium=(* Compressed Air In Accordance with Iso8573-1:2010 [7:-:-], * Water As Per Manufacturer's Declaration ), Festo