Interface Adaptor, Type: Extreme Standard, Model: A-5, Tip Size: 1/4 inch, Fuel Type: Acetylene, Flame Type: Swirl, Brazing Capacity: 1/4 to 3/4 inch for Silver, Orifice: Replaceable, OR-A5, For Use With: Air Acetylene Torch Handle (PLF-A5 or G-4), Soft Solder: 3/4 to 1 1/2 inch (20 to 40 mm), Gas Flow: 5.7 at 14 PSI SCFH, 0.48 at (0.9 BAR) M3/HR, Applications: For Industrial, High Capacity Application, HVAC