WBT lead-free solder is the highest quality solder, with 4% fine silver content. The halogen-free flux is gentle on precious metal surfaces.
The melting temperature is extremely low at 219˚C / 426˚F.
500 grams / 1.140 lbs.
57m / 187′
You can find out more on the WBT range of products by visiting their web site here.