The X 39 60EN 2C 0.7MM R 250G is a no clean cored Solder Wire manufactured as standard with a nominal flux content of 1%. Multicore X39 cored wire is available in a variety of alloys conforming to J-STD-006 and EN 29453 or alloys conforming to similar national or international standards. The alloys used for Multicore flux cored solder wire conforms to the purity requirements of the common national and international standards. A wide range of wire diameters is available manufactured to close dimensional tolerances. Multicore X39 solid flux is based on modified rosins and halide-free carboxylic acid activators. In use it has a mild rosin smell and leaves a small quantity of clear residue.