#44 Rosin Flux / 3% .125" Dia 1-lb Kester Solder 24-6040-0069 Sn60Pb40,Kester Solder 24-6040-0069 Sn60Pb40 #44 Rosin Flux / 3% .125" Dia 1-lb, • High activity RA core flux provides excellent wetting action even on nickel surfaces,RA flux core solder is the industry standard for electrical and electronic hand soldering, Kester Sn60 Pb40 44 Product Performance, • Concorde-Electronics is an authorized Kester Solder distributor, Prices Drop As You Shop quality merchandise Saver Prices Discounted price FREE Shipping, BEST Price Guaranteed! 1-lb Kester Solder 24-6040-0069 Sn60Pb40 #44 Rosin Flux / 3% .125" Dia.