BernzOmatic SSW800 8 oz. Lead Free, General Purpose/Plumbing Solder Lead-free, NSF 61 certified safe for potable water systems Melting temperature of 430 F/ 221.1 C Perfect for creating water-tight seals in copper pipes, and for general plumbing repairs Diameter of .062 in. (1.6 mm) or .118 in. (3 mm) Meets atsm standards B32