Draper - Heavy Duty Gas Mixer (For Use with Stock No. 35031) Designed for sheet metal and the automotive trade. Comprises three separate items: Heavy Duty Shank (Stock No. 35031) which carries oxygen and acetylene and controls gas flow to the Heavy Duty Cutting Attachment (Stock No. 35033) and a Heavy Duty Gas Mixer (Stock No. 35032) for combining oxygen and acetylene which holds welding nozzles (supplied separately). Items are purchased separately to make up combination required. All items are carton packed.