View basket “Oxygen Cylinder Transfiller System” has been added to your basket. O2 Union 4mm I, one-touch€ 6,00 One-Touch (Push-to-Connect), 4mm, I union. Only 2 left in stock (can be backordered) O2 Union 4mm I, one-touch quantity Add to basket Categories: Adapters & parts, Oxygen Description Description O2 Union 4x4mm I, one-touch MH p/n: 19056-0400-00 Related products Oxygen/Adapters & partsTransfill Adapter, CGA-540 to DIN 477-9 (Euro) € 79,00 Add to basket Oxygen/Adapters & partsO2 universal mounting kit from Mountain High € 159,00 Add to basket Oxygen/Adapters & partsO2 mounting bracket for 10 cm (EU) cylinders € 34,50 Add to basket