Features: Directly use, do not need to other flux powder. Welding effect is good, its welding spot is full and smooth. With low melting point, good fluidity, hardness and toughness, good sealing. Welding residue is non-corrosive, non-hygroscopic and firmly attached. Suitable for copper and aluminum wire welding of radiators, motors, batteries, household appliances and other products. Specification: Condition: Brand New Length: 2/4/10m (Optional) Package Weight: 38~200g (approx.) Package List: 1 x Copper Aluminum Cored Wire