PV 304 Stainless Steel Metal Pneumatic Connector 4 6mm 8mm 10mm 12mm Elbow 90 Degree Push-in Quick Connector Release Air Fitting
https://www.vogueparade.com/shopping/EN/200282142/1/1005003649710381/pv-304-stainless-steel-metal-pneumatic-connector-4-6mm-8mm-10mm-12mm-elbow-90-degree-push-in-quick-connector-release-air-fitting//