TurboTorch A-11 Air Acetylene Tip has a 7/16" tip size and gas flow of 11 at 14 psig. It features removable orifice screw and a color-coded "O" ring to choose the correct tip for preferred gas. It is ideal for high capacity applications like HVAC and is used for soft solder of 1 1/2 - 3" or silver braze of 7/8 - 1 5/8".