Furutech S-070 Solder

S-070 Furutech Silver solder is designed to give fast and sustained wetting on both copper and brass. After 5 seconds, a measured spread area indicates total flux efficacy. Furutech solder out-performs competitor products, which require a higher flux content and leave more residue and have poorer spread. Alloy: Silver 4%+ Tin 96% Ersin/362, Flux/5 Core Diameter: 0.70mm Weight: 250 grams/Reel ? Material treated with the Furutech Alpha Process ? Lead free