Goldtool Alloy Soldering Wire with Dispenser Tube Pen-60/40 rosin core (60% Tin, 40% lead+ resin+ flux) , Diameter of the Soldering Wire: 1mm, Weight: 15g, Retail Box Product OverviewThe Goldtool 60/40 Alloy Solder pen is ideal for electronic parts, wires connection, printed circuit boards, wire repair, every electronic technician, hobbyist, craftsmen, etc. However it is not suitable for plumbing ..