Standard early wartime pattern corrugated rubber oxygen tube complete with a brass plated Air Ministry MK.IV (6D/526) bayonet connector and cadmium plated crocodile clothing clip. These early tubes are significantly narrower than later war examples and were standard fitting on the E-series masks as well as being used on some early issue G-masks. It is in very good used condition, fully flexible but with typical (minor) cracking within the folds/corrugation. No splits or holes. Significantly rarer than the later war tubes. Stock code O20468.