TOPEX tin solder with 60% tin content, 100 g, with SW21 flux. SW21 is non-corrosive flux for use in electronics and electrical works. It`s perfect for households and small repairs. Solder is mainly used in electronic industry for production of standard electronic devices and assemblies, in electrical industry and to solder pieces with coatings of tin, tin and lead, cadmium, zinc and silver. TOPEX brand is oriented towards DIY enthusiasts.