LUNG

Air pumps, hand-operated.

Inserts for breathing masks, other than for medical use; plug adaptors; pressure indicator plugs for valves; divers' masks; diving equipment; oxygen masks, other than for medical use; depth gauges; gauges; respiratory masks, other than for medical purposes; masks for swimming; breathing apparatus for underwater swimming; underwater breathing apparatus; masks for diving; masks for scuba diving; atmospheric oxygen monitors; oxygen sensors, not for medical use; oxygen monitors, not for medical purposes.