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Parker 169PMTNS-8-M12-pk10 Push-to-Connect D.O.T. Fitting, Tube to Metric Thread, Push-to-Connect and Metric 90 Degree Elbow, 1/2" and M12x1.5 mm, Brass, 1/2", M12 x 1.5 mm (Pack of 10): Amazon.com: Industrial & Scientific
Black Push-To-Connect Tube Fittings - Metric Tubing
Metric Tube Stainless Steel 316 Push In Push to Connect Fittings with Viton FKM O ring seals