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 mounting bracket for 10 cm (EU) cylinders € 39,50 Add to basket Oxygen/Adapters & partsO2 Union 4mm Y, one-touch € 6,00 Add to basket SaleOxygen/Oxygen cylindersLight steel cylinder – 1, 2 or 3 liter € 125,00 – € 199,00 Select options