This is 3/64" Diameter 1/2oz Silver Solder with 1/2 oz Flux from Stay-Brite. FEATURES: Five times stronger than ordinary solder with tensile strength of 10,000-25,000 pounds per square inch. Will stretch under high pressure, but not break under constant stress and is vibration-resistant. Conducts electricity better. Lead free making it environmentally friendly Melts and flows at 430°F, providing strength without distortion INCLUDES: One 3/64" Diameter, 1/2oz Silver Solder Coiled One 1/2oz Bottle of Flux One Instruction Sheet One Clear Plastic Storage Canister with White Lid ir/jl COMMENTS: NOT for use with electronic applications