Product details:

A special self-fluxing solder alloy for repairing damaged galvanized coatings. Gal Viz provides excellent corrosion resistance. It has a working temperature of about 600F. Apply while base metal is hot. A clean wire brush will aid in tinning the surface with Gal Viz. It can also be tinned with a paddle or cloth. Do not direct flame on the alloy. Heat the base metal and rub the rod on the metal. When it melts, the temperature is correct.