771-5939, SMC, SMC KQ2 Series Y Tube-to-Tube Adaptor, Push In 4 mm to Push In 4 mm, Tube-to-Tube Connection Style, Brand SMC, Connector A Push In 4 mm, Connector B Push In 4 mm SMC KQ2 Series Y Tube-to-Tube Adaptor, Push In 4 mm to Push In 4 mm, Tube-to-Tube Connection Style