Tin Solder, Lead Solder, Flux-core Solder, and Rosin-core Solder– Differences and Uses
Amazon.com: DTS Solder Wire Tin Lead 40/60 Rosin Core 0.062-inch (1.6mm) on Spool, 1 pound - Made in USA | Soldering Wire for Electronics Repair and More : Tools & Home Improvement
1.0mm 60/40 Sn-Pb Tin Lead Resin Core Solder Wire Electrical ...