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Features: Double switch: control the flame size through a switch (switch 1 needs to be turned off when using switch 2) The double switch is more gas-saving than the single switch, and the control is more convenient, safe and reliable. Specifications: Material: Steel Welding Type : Gas Welding Gun Model : 30/35/50 Type : Welding Gun Welding Capability : Solderring, Brazing, Welding Size: 50#: Length: 650mm Nozzle diameter: 51mm Nozzle length: 98mm Rod size: 360mm Handle length: 110mm Included in the package: 1* Gas Gun 50# Gift: 1.2M high pressure tube, free! ! ! Notes: 1. Please allow 1-5mm difference due to manual measurement, thank you. 2. Due to the difference of different monitors, the picture may not reflect the actual color of the item.