Solder-filled Gold-filled Round Wire 18 Gauge Dead-soft Temper 18 Inches (1.5 Feet)
You won't have to add more solder for making chains, jump rings, and some styles of jewelry; create jump rings out of solder filled wire, so you don't have to add any solder, and they are clean after they solder.  18 gauge wire, 0.4mm diameter, 18 inches long; just flux and heat to solder; pickle if necessary. This is not gold solder wire. It is gold filled wire with solder inside. This is gold filled  wire with solder inside, used for making jump rings, or similar.