Thetin-lead alloy with rosin flux core ensures smooth solder flow, strong joints, and improved conductivity. Rosin Flux Core. Core Type:Rosin Flux Core. 1 × 100g 0.8mm Rosin Core Solder. Ideal forcircuit board repairs, electronic components, DIY projects, and general soldering tasks, this solder wire provides consistent performance for both professionals and hobbyists.
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