Mini Pak - Silver brazing 45%,flux coated rod, 2.4mm x 503mm with x5 rods in a POP hanging tube. CADMIUM FREE. Flux coating ensures rod is not affected by oxidization. Self fluxing is very versatile having a low melting range. Ease of use due to the elimination of prefluxing joints. Ideal for joining steel, copper brass and nickel with exceptional strengths.