Felder - Fields Flux for silver solder according to DIN EN 1045-FH-10, in paste form "CuFe No. 1

Felder flux for silver solder according to DIN EN 1045 - FH 10, for soldering of steel, precious steel, copper, brass and red brass, working temperature 500-800°C, paste "CuFe Nr.1", different dimensions see variations