ITEM NAME:60/40 Tin Lead Rosin Core Flux 0.6mm Diameter Soldering Fine Solder Wire 10M.1 x 0.6mm 50G 60/40 Rosin Core Flux 1.2% Tin Lead Solderi. Flux: 1.2%. High quality soldering wire on the market. Refined welding good fluidity, wetting, smoke spatter. Material: Tin Lead. Uses: electronic welding.