Fittings - AdaptersOxygen Nut For Barb FittingSKU: W-7 Nut for use with oxygen barbs. Interested in pricing and more information about this product? Quantity Add to cart Add to quote Related products Fittings - Adapters1/4″ x O2 Oxygen Adapter View product Fittings - AdaptersCGA-580 Heliox Nut View product Fittings - AdaptersOxygen Barb End For 1/4″ Hose View product