Brand: Stahl Tools. MPN: SCU112. Manufacturer Part Number: SCU112 These lead free solder tubes fit perfect into tool boxes and soldering iron cases. The solder conveniently feeds through the top of handy dispenser tube. Key Features: Convenient size with dispenser tube Lead free for safe handling solder jobs Contains 99.3% tin and 0.7% copper with 2% flux Standard 0.039 diameter for PC board soldering Stahl Tools SCU112 0.039 (1.0mm) Lead Free Solder Pocket Pack Tube 12g Lead free solder works great for solder joints that might be exposed to excessive handling. The lead free formula helps reduce the worry from using solder for repair jobs and new projects. The storage tube helps keep the 99.3% tin 0.7% copper and 2% flux from being exposed to contaminants and the 0.42 oz. (12 grams) size makes it perfect to carry in small tool boxes cases and tool belts. The 0.039 diameter works best for PC board soldering. Product Details BrandStahl ToolsModelSCU112Part Number374-610UPC848864049663Unit of MeasureEachWeight0.05.