O2 Union 6mm Y, one-touch€ 6,50 One-Touch (Push-to-Connect), 6mm, Y union. In stock (can be backordered) O2 Union 6mm Y, one-touch quantity Add to basket Categories: Adapters & parts, Oxygen Description Description O2 Union 6x6x6mm Y, one-touch. For use with wider 6mm O2 air tube. Related products Oxygen/Adapters & partsO2 Union 4mm Y, one-touch € 6,00 Add to basket Oxygen/Adapters & partsOxygen Cylinder Transfiller System: DIN-477 to CGA-540 € 699,00 Add to basket SaleOxygen/Mountain High EDSMH EDS O2D1 kit € 995,00 € 795,00 Add to basket