2AX-24 : Two-Place Advanced Aviation Oxygen System 
Aluminum high pressure refillable cylinder 
680 liters/24 cu. ft. (4.38" diam x 24.9" - 7.14lbs.)
Standard 870 toggle valve
Adjustable 12 position regulator (0-15 LPM) w/ contents gauge, all brass interior
2 Oxymizer cannulas, 2 standard oxygen masks, 2 standard nasal cannulas
Transfill yoke adapter
Settings/Duration chart
Instructions
Cylinder duration at 10,000 ft: 3.7 hours w/standard mask @ 3 LPM
Using Oxymizers, duration increases up to 400%