This is a portable oxy-acetylene welding or cutting torch cart set.
Includes a green high-pressure oxygen cylinder (labeled "OXIDIZER"), a smaller cylinder (typically acetylene), regulators for pressure control, hoses, and a torch body. Used for gas welding, brazing, heating, or cutting metal. Mounted on a two-wheeled blue metal trolley for transport. Original googles included. It works, as seen in the video. Available for pickup in north Denver. If you see the listing, the item is available so please do not ask. Thanks for looking.