Electronic solder, lead-free according to DIN 29453, S-Sn 99.3 Cu 0.7, with active resin flux, non-corrosive on non-ferrous metals, flux according to DIN EN 29454-1 1.1.2 B 2.5% (weight % 2.5± 0.5), on disposable spools. Wire diameter 2.0 mm, weight: 250 g.