Forney 38101 Acid Core Commercial Grade Solder, 1/8-Inch, 1-Pound Reviewhttp://tinyurl.com/lzkjns5 Forney 38101 Acid Core Commercial Grade Solder, 1/8-Inch, 1-Pound General purpose solder for sweat fittings, sheet metal joints, gutter work and other big jobsWorks well on galvanized sheet metal, copper, steel, nickel plate, brass and tin plateOften used on radiatorsNot for electrical connections