197-7778, RS PRO, RS PRO Push-in Fitting, Push In 4 mm to Push In 4 mm, Threaded-to-Tube Connection Style, Brand RS Pro, Connector A Push In 4 mm, Connector B Push In 4 mm RS PRO Push-in Fitting, Push In 4 mm to Push In 4 mm, Threaded-to-Tube Connection Style