6 kg,Material: Carbon Steel,Overall Size: 35x12x11 in / 895x319x92 mm.VEVOR Refrigerant Tank Rack with 2-30lb and Other 3 Saving Space Cylinder Tank Rack 35x13x14-inch Refrigerant Cylinder Rack Gas Cylinder Racks and Holders for Gas Oxygen Nitrogen StorageDurable Steel MaterialStrengthen StructureSufficient Storage AmountDetachable FrameConvenient HookWide Application AreaStorage Amount: 5,Cylinder Type: 30 lb / 13.