ELSOLD cored solder wires have been used successfully in electronics for decades, and allow solder and flux to be applied to soldering joints simultaneously. Despite the development of solder pastes which serve the same purpose, cored solder wires have been able to hold their own, and are still the preferred solution for applications such as manualrepair soldering or automatic soldering (robot soldering). ELSOLD cored solder wires are avail.