All the cylinders are in stock new produced ,once you order they can be shipped out within 2 days . Self-Contained Breathing Apparatus cylinder featured aluminum alloy liner with thin wall and full-wrapped composite material exterior with carbon fiber, are suitable for SCBA, oxygen respirator, fire extinguisher, medical aid and emergency, as well as for use in automobile, space industry, etc. Carbon fiber cylinder characteristics & Features: 1. Light weight: Up to 50 percent lighter than comparable steel cylinders; 2. Outer layer with full-wrapped superior carbon fiber features creep resistance, shock resistance and corrosion resistance, etc.; 3. High pressure resistance; 4. Leakage first before explosion; 5. No splashing fragment in explosion

• light weight 3.9KG
• Thread 0.875-14 UNF-2B
• DOT approval
• 45 minutes use

light weight 3.9KGBeijing Uec Corporation