B-9 : One-Place Basic System 
Aluminum high pressure refillable cylinder, delivered empty 
255 liters/9 cu. ft. - 4.38" x 10.7" - weighs 3.6 lbs.
CGA-540 low profile valve with gauge and shutoff
Adjustable 12 position regulator, 12 positions 0 to 15 LPM, all brass interior
1 Medium concentration oxygen mask
Cylinder duration at 10,000 ft: 2.8 hours w/standard mask @ 1.5 lpm