AIRCO HEAVY DUTY REGULATOR SET. Up for your consideration is a heavy duty Genuine Airco regulator set. Please check your acetylene tank connection before ordering. If you do not hava a CGA-300 connection, adapters are available to fit your tank. This set is a little dirty with light scratches and discoloration from storage but is new old stock and has never been used. I also have many other cutting and welding torches, tools and equipment listed if you are interested. Please feel free to ask any questions you may have and thanks for looking!