With the help of the low melting point and good fluidity, this welding rod offers full and smooth welding effect. No need compatible extra flux powder, this strong and tough welding rod with internal flux can be used directly. And the welding joint compatiblemed has good sealing percompatiblemance. Made of high-quality copper aluminum alloy, this welding rod is strong and durable. The width of this welding rod is 2.0mm and there are 3 lengths (100cm, 200cm, 300cm) compatible you to choose. This welding rod is widely used compatible copper and aluminum wire welding of radiators, motors, batteries, household appliances and other products. Item Name: Welding Rod Material: Copper Aluminum Alloy Specification: 100cm/200cm/300cm Size Details: Length: 100cm, 200cm, 300cm/39.37", 78.74", 118.11" (Approx.) Width: 2.0mm/0.08" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Welding Method: Use sandpaper to polish the welding part of the brass and aluminum pipe (the paint, oxidation, oil, etc. on the metal surface must be cleaned), use the welding torch to heat the welding part evenly, and then continue to use the electrode when the welding temperature rises to 360 degree Celsius, the copper and the aluminum electrode melts and enters the joint evenly. After the weld is filled, take out the welding torch and wait compatible it to cool. No further treatment after cooling, the flux residue is visible but non-corrosive, does not absorb moisture, and adheres firmly. Package Includes: 1 x Welding Rod