Quick connector CK-1/8-PK-6-KU Male thread with sealing rim, polymer design. Nominal size=4,4 mm, Type of seal on screw-in stud=Sealing edge, Assembly position=Any, Operating pressure complete temperature range=0 - 10 bar, Operating medium=(* Compressed air in accordance with ISO8573-1:2010 [7:-:-], * Water as per manufacturer's declaration at www.festo.com)