Using this product, our team found that welding copper with copper allows for the cleanest welds we've seen to date... The Victor Arcair 22983003 copper-clad electrodes work really well for automotive welding applications. They are easy to use with a smooth arc and overall produce a satisfying finish. One drawback we found was that the cost of these electrodes is a bit high compared to others, but it is worth it for the quality of the weld..