TIG Welding: Argon gas is required, and how many welding methods are available, such as spot welding, continuous welding, etc. Depends on different welding machine effects and welding machine habits.There is no requirement for the size of the tungsten needle, 1.6, 2.4, 3.2 and other diameters can be used. MMA Welding: Does not require any gas, requires welding rod. The easiest way to solder is to use a non-technical and DIY soldering, depending on the welding effect. After you place an order, the warehouse staff will process your order immediately and deliver the goods to you as soon as possible. We will reply you immediately if you need more product details, videos or any other questions. OUR PURPOSE: ONLY MAKE THE RIGHT CHOICES. Main products: plasma cutter, welding machine, filling machine, sealing machine, labeling machine, capping machine, etc. Reliable quality and honest management have won the favor of consumers for us. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Welding & Soldering Equipment\Welding Equipment & Accessories\Welders, Cutters & Torches\TIG Welders". The seller is "mostech16" and is located in this country: US. This item can be shipped to United States.