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
Push-in fitting CRQS-1/4-10 | Festo USA
Tacoma Screw Products | Festo Push-In Fitting M4 x M5 - 0.8 QSML Composite Male Elbow
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Festo 153304 QSM-M5-4 Push-in Fitting, Nickel Finish, 2.2 mm Inside Diameter Minimum Order Requirement 10 / Order in Multiple of 10: Amazon.com: Industrial & Scientific
Festo 153321 QSM-M7-6-I Push-in Fitting, Nickel Finish, 4.1 mm Inside Diameter Minimum Order Requirement 10 / Order in Multiple of 10: Amazon.com: Industrial & Scientific