Gas cylinder/Oxygen Cylinder: KBR Series There are KBR-0.7L, KBR-1L, KBR-1.4L, KBR-2L, KBR-4L, KBR-7L, KBR-8L, KBR-10L, KBR-15L and KBR-40L oxygen cylinder for steel and aluminium material with bag ortrolley as package, which shall bring great convenience for you and shall be fit for medical,healthcare and family use. In the meantime, all our KBRoxygen cylinders have been passed ISO13485.