Fittings - Adapters1/2″ x O2 Oxygen AdapterSKU: 7ADR 1/2″ 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 1/4″ x O2 Fitting – 99R View product Fittings - AdaptersCGA-296 Nitrox Nipple View product