QS-1/4-12-I Festo | Festo QS Series Straight Threaded Adaptor, R 1/4 Male to Push In 12 mm, Threaded-to-Tube Connection Style, 190649 | 121-6212 | RS Components
Festo Push-in Fittings | Pneumatic Component | Pneumatic Festo | Festo Connector | Air Tools - Pneumatic Parts - Aliexpress
QS-1/2-12 Festo | Festo QS Series Straight Threaded Adaptor, R 1/2 Male to Push In 12 mm, Threaded-to-Tube Connection Style, 153010 | 121-5607 | RS Components