O2 Union 4mm I, one-touch€ 6,00 One-Touch (Push-to-Connect), 4mm, I union. Available on back-order 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 & partsO2 Union 4mm Y, one-touch € 6,00 Add to basket Out of stockOxygen/Oxygen cylindersMountain High oxygen cylinder Read more SaleOxygen/Mountain High EDSMH EDS O2D2 with Pressure Regulator (DIN-477) € 1.490,00 € 1.250,00 Add to basket