Mini 1L Scuba Oxygen Cylinder Diving Air Tank Kit Snorkeling Breathing Equipment Diving Goggles Diving mask you can choose Oxygen cylinder capacity 1L Breathing time 20-25min Greatest pressure 3000PSI/200BAR/20Mpa Material Aluminum 6061-T6 Surface Technology Hard oxidation + spraying Oxygen cylinder weight 2.39kg Oxygen cylinder size 85*402MM.
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