O2 Union 6 to 4 mm I, one-touch€ 6,50 One-Touch (Push-to-Connect), 4 x 6 mm, I union. In stock (can be backordered) O2 Union 6 to 4 mm I, one-touch quantity Add to basket Categories: Adapters & parts, Oxygen Description Additional information Description O2 Union 4 x 6 mm I, one-touch. To connect the smaller 4 mm air tube to the wider 6 mm tube. Additional information Weight 0,003 kg Related products Oxygen/Adapters & partsO2 Union 4mm I, one-touch € 6,00 Add to basket Oxygen/Cannulas & masksEDS Face Mask € 14,95 Add to basket Oxygen/Oxygen cylindersAluminium cylinder – 2 liter € 169,00 – € 199,00 Select options This product has multiple variants. The options may be chosen on the product page