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 SaleOxygen/Mountain High EDSMH EDS O2D2 kit € 1.250,00 € 1.050,00 Select options Oxygen/Adapters & partsRegulator Fitting one touch 4mm – 90º € 15,00 Add to basket Oxygen/Oxygen cylindersLight steel cylinder – 1, 2 or 3 liter € 145,00 – € 209,00 Select options