50/50 Tin/Lead Solder - Sn: 50% (Tin) Pb: Pb 50% (Lead) 50/50 Solder is a general purpose solder for general sheet metal work and plumbing (not water pipes) applications where better free flowing characteristics are important.  CAUTION: Lead-bearing solders are not to be used in drinking water systems. FEATURES - Higher quality general purpose solder - For electrical and electronic applications.