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/Cannulas & masksEDS Cannulas for EDS pulse demand systems € 11,50 Select options Oxygen/Oxygen cylindersAluminium cylinder – 2 liter € 145,00 – € 175,00 Select options Oxygen/Adapters & partsMH-400 High Pressure Gauge € 29,00 Add to basket