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The Markal Aluminum Flux Paste & Solder Kit is a complete repair kit for tradesmen and repairmen. Use the Aluminum Flux Paste & Solder Kit for repairing aluminum evaporators and tubing, ducts, and gutters. It resists electrolytic action between aluminum and copper, preventing leakage between dissimilar metals and its low-temperature soldering prevents aluminum components from melting - See more at: http://www.laco.com/soldering-fluxes/aluminum-flux-paste-and-solder-kit/#sthash.rqezNjXg.dpuf.
*Kit includes 90/10 tin-zinc solder.