Why choose us Good solderability in both electrical conductivity and thermal conductivity. The melting point of solder wire is 227. Precise processing through the addition of flux.100g solder 1.0mm, Sn or Cu: 99.3 percent or 0.7 percent 2 percent flux content. Flexible, thin wire, great for home soldering workers. With the solder wire spool, soldering can be done quickly.Solder wire has less smoke and rosin spatter when soldering. Above all, it is lead-free and still runs very well on the soldering point thanks to the integrated flux.The solder itself melts quickly and can therefore be applied to the required areas. After cooling it has a shiny surface and the solder joints look great.The lead-free solder wire with rosin is for DIY, repairing cables, radios, TVs, VCRs, stereos, headsets, motors, toys, circuit boards and others electrical devices.Technical data:Parameters: tin 99.3 percent , copper: 0.7 percent rosin core: flux 2.0 percent Melting point: 227Wire diameter: 1mmPackage includes:1 x solderHow to solder 1. Prepare solder wire and electronic soldering iron.2. Contact the soldering iron with solder joint.3. Place the solder wire on the joint when the weld metal is heated to the temperature capable of melting the solder.4. When a certain amount of solder has melted, remove the solder wire.5. Remove the electronic soldering iron at about a 45 angle when the solder joint has been completely wetted with solder.- Flows well and heats up evenly. - The smoke formation is not as strong as with most solders. - The solder joint hardens quickly and cleanly. - Also, the solder joint stays smooth and shiny, and doesn't get rough. - The solder is wound tightly on a plastic roll and can easily be bent into shape to position the end over the solder joint. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store