121-6248, Festo, Festo QS Series Reducer Nipple, Push In 8 mm to Push In 4 mm, Tube-to-Tube Connection Style, 130606, Brand Festo, Connector B Push In 4 mm, Pneumatic Fitting Type Reducer Nipple Festo QS Series Reducer Nipple, Push In 8 mm to Push In 4 mm, Tube-to-Tube Connection Style, 130606