Product_description: ['"285" RMA solder flux residues do not require removal in most applications. "285" solder performs similarly to a mildly activated rosin core (RMA) leaving a visually cleaner appearance after soldering. Residue does not require removal for most applications Residues are non-corrosive and non-conductive', 'Kester Wire Solder, Sn63/Pb37 Alloy, .031" Dia., #285 RMA Flux, #66 Core Size, 1-lb. Roll']

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