Lightweight and portable Oxygen Units can be used to administer supplemental oxygen for a breathing victim or to provide oxygen enriched CPR. The 240L aluminum C cylinder delivers a 40 minute supply of oxygen at six liters per minute. The universal CGA 870 pin-index valve allows the cylinder to be refilled. Regulator is constructed of durable brass components. Oxygen Unit also features wall-mount hook, crimp-proof oxygen hose with comfortable handle and shoulder strap. Lightweight Oxygen Units weigh only six pounds. Softpac makes Unit perfect for storage in vehicles or other areas with limited space. Includes CPR mask to fit both adults and children. Choose from Fixed Flow, Combination Fixed Flow (Normal or High) or Variable Flow Oxygen Units.