Goss KA-125-B 125 Series Oxy-Acetylene Welding and Brazing Kit with B Acet Regulator Welds to 3/16 inch, brazes to 1-1/2 Inch Ideal for welding and brazing tube, sheet or pipe Handle has valves at rear UL listed torch & regulators, "A" hose fittings Kits matched to different tank sizes