Solder, Solid Wire 1/8" 1 Lbs. For general purpose use with appropriate type flux such as Forney 38120, Ruby Fluid, Forney 38125, Paste Flux, or Forney 38127 & 38128, Hi-Temp Fluxes. NOT SUITABLE FOR ALUMINUM. Size: 1/8" Weight: 1 Lbs. (.453 Kg) Grade: Commercial Tensile Strength: -- Melting Temp: 575? (299? C)