Material: Copper and aluminum.Size: Approximately 9 * 70mm.Quantity:1/2/ 3/6/9/15pcs.Package contains:3/6/9/15*welding rod.Copper, aluminum, iron and stainless steel can be repaired.Good flowability, low temperature repair.Non-toxic, odorless, durable.Perfect repair effect.Tip: The material is brittle, the goods received have broken, that is normal. Does not affect the use.* Not recommended for children under 12 years old. 1. Multi-function.You can use it to work on stainless steel. It can also be used for the repair of argon and filling material of pure aluminum, the connection of aluminum sleeve and guide rod with electrolytic aluminum plant, as well as electric power, chemical, food, etc. 2. Easy to use.With aluminum alloy as the core and coating as the salt base, there is no need to use other flux powders. The powder-filled aluminum welding rod can be repaired quickly with a lighter.3. Wide range of use.Including welding household water pipes, gas pipes and stainless iron, copper pipes, aluminum pipes, water tank electronic components, electrical circuits, etc.Instructions for use.1. Be sure to polish the welded parts clean and flat before use.2. Just dissolve the drop on, must be fixed, it is recommended to fix for about 5 minutes, and wait for the welding wire cool resting half an hour.