Based on my experience this tool is a must-have for any industrial and scientific setting .The Electronic Repair Welding Auxiliary Double Head is a game changer in the welding industry. Its double head feature makes it easy to work in tight spaces and the electronic repair function adds an additional layer of usefulness. The only con I could find is that the price might be a bit steep for those on a budget. Nonetheless, this tool is worth every penny for anyone looking to step up their welding game..