Fittings - Adapters3/8″ x O2 Oxygen AdapterSKU: W-142 3/8″ x O2 brass oxygen adapter. Interested in pricing and more information on this product? Add to quote Related products Fittings - AdaptersReusable 3/8″ x O2 Fitting – Lenz 115R View product Fittings - AdaptersReusable 1/2″ x #10JIC Fitting View product Fittings - AdaptersReusable 1/4″ x O2 Fitting – 99R View product