Turbotorch 0386-0851 STK-99 Self Lighting Dual Fuel Hand Torch. TurboTorch has developed a new series of hand torches that also feature Extreme Swirl Technology. The new Extreme series generates more heat than other hand torches for faster brazing times and less gas consumption. All Extreme series hand torches and tips feature TurboTorch swirl combustion. Higher heat levels, in a short amount of time, enable the pros to quickly complete the job. Turbotorch 0386-0851 Features: Torches are built with Turbo Torch swirl combustion. All models have 360 degree swivel tips. Easy-to-clean orifice, interchangeable tips. Use with CGA 600, 1 lb. MAPP, MAP-Pro, Propane Tanks. Turbotorch 0386-0851 Specifications: Propane: Sold Solders: 1/4-3 inch, 6-76mm, Silver Brazes: 1/4-1 inch, 6-25mm, MAPP: Soft Solders: 1/4-3 1/2 inch, 6-90mm, Silver Brazes: 1/4-1 3/4 inch, 6-45mm.