These aluminum welding rods are no solder powder needed, wide applications and perfect welding effect. Features: Suitable for welding or surfacing welding alloy with high strength, well forgeability and well corrosion resistance. Made of high-quality aluminum material, non-toxic, odorless and durable. There is no need to use other flux powder with aluminum alloy as the welding core and coating as the salt base. Include welding filler wire and spray and flame metalizing wire. It also used for argon arc welding and filling material for pure aluminum, connection with aluminium bus and guide rod of electrolytic aluminium plant and electric power, chemistry, food and so on. Designed with full and smooth welding effect because the item comes with internal powder, well weldability and corrosion resistance, high thermal conductivity, high electric conductivity and high processing performance. Specifications: Material: Aluminum Color: Silver Quantity: 20Pcs Size: 500 * 1.6mm / 19.69 * 0.06in, 500 * 2.0mm / 19.69 * 0.08in, 500 * 2.5mm / 19.69 * 0.1in, 500 * 3.2mm / 19.69 * 0.13in, 330 * 1.6mm / 12.99 * 0.06in, 330 * 2.0mm / 12.99 * 0.08in, 330 * 2.5mm / 12.99 * 0.1in, 330 * 3.2mm / 12.99 * 0.13in, 250 * 1.6mm / 9.84 * 0.06in, 250 * 2.0mm / 9.84 * 0.08in, 250 * 2.4mm / 9.84 * 0.09in, 250 * 3.2mm / 9.84 * 0.13in (optional) Package Weight: 500 * 1.6mm: 50g / 1.76ounces 500 * 2.0mm: 90g / 3.17ounces 500 * 2.5mm: 130g / 4.59ounces 500 * 3.2mm: 190g / 6.7ounces 330 * 1.6mm: 40g / 1.41ounces 330 * 2.0mm: 60g / 2.12ounces 330 * 2.5mm: 80g / 2.82ounces 330 * 3.2mm: 120g / 4.23ounces 250 * 1.6mm: 30g / 1.06ounces 250 * 2.0mm: 40g / 1.41ounces 250 * 2.4mm: 60g / 2.12ounces 250 * 3.2mm: 90g / 3.17ounces Package Size: 500 * 1.6mm: 500 * 9 * 9mm / 19.69 * 0.35 * 0.35in 500 * 2.0mm: 500 * 10 * 10mm / 19.69 * 0.39 * 0.39in 500 * 2.5mm: 500 * 11 * 11mm / 19.69 * 0.43 * 0.43in 500 * 3.2mm: 500 * 12 * 12mm / 19.69 * 0.47 * 0.47in 330 * 1.6mm: 330 * 9 * 9mm / 12.99 * 0.35 * 0.35in 330 * 2.0mm: 330 * 10 * 10mm / 12.99 * 0.39 * 0.39in 330 * 2.5mm: 330 * 11 * 11mm / 12.99 * 0.43 * 0.43in 330 * 3.2mm: 330 * 12 * 12mm / 12.99 * 0.47 * 0.47in 250 * 1.6mm: 250 * 9 * 9mm / 9.84 * 0.35 * 0.35in 250 * 2.0mm: 250 * 10 * 10mm / 9.84 * 0.39 * 0.39in 250 * 2.4mm: 250 * 11 * 11mm / 9.84 * 0.43 * 0.43in 250 * 3.2mm: 250 * 12 * 12mm / 9.84 * 0.47 * 0.47in Note: These aluminum welding rods are solid core, can only be welded with aluminum. Usage: 1. Clean and polish the physical surface. 2. Heat the surface of the metal material until the temperature of wire is up to the working temperature 380 to 400. 3. The aluminum base metal is heated to the appropriate working temperature when repairing thin aluminum, and then use the wire friction and melt to form a weld. 4. Use propane gas to weld small object and use industrial gas or induction heating device to heat and weld big one, you should cool it naturally after welding. Packing List: 20 * Aluminum Welding Rods