C-Flux is a high quality flux containing powdered solder which provides added insurance for a leak free joint. For use with 95/5, 60/40, 50/50 and 40/60 solders. Lead free flux containing powdered solder for added insurance against a leak free jointFor use with 95/5, 50/50, 40/60 and 60/40 soldersPre-cleans and pre-tinsContains 95/5 tin antimony