Do it 1/4 oz. Rosin 40% Tin, 60% Lead Solder is designed for general-purpose use, making it i for a variety of repair tasks such as fixing gutters, auto radiators, and filling metal seams. This solder reliable performance for these applications, but it is important to note that it is not suitable for plumbing or electrical repairs. For those specific needs, other solder types with appropriate compositions should be selected to ensure safety and effectiveness. follow safety guidelines and choose the correct solder for each job to achieve results and avoid potential hazards. Model Number: 53039