Stay Brite is the premium solder that solders all metals (including stainless steel and cast iron). except aluminum. It flows freely and has over twice the tensile strength of regular solder. Melts and flows at only 430 degrees F, providing strength without distortion. Includes a 1/2 oz. coil of solder and 1/2 oz. bottle of flux. Can be used with soldering iron or torch. Lead free.