Lead-Free Solder Wire: This lead-free solder wire features a rosin core, offering excellent solderability for both electrical and thermal conductivity. The high-quality materials ensure a safe, reliable, and long-lasting product, free from impurities. Lower Melting Point: With a melting point of 227℃, this thin, flexible wire is perfect for DIY soldering projects. The solder wire spool allows for quick and easy soldering. Weight and Diameter: 1.0mm diameter; net weight: 20g; Sn 99.3% - Cu 0.7%; flux content: 2.2%. Lead-Free Tin: Avoid the health and environmental hazards of lead-based solder by switching to this safer alternative. Highly Economical: Buying solder on a spool is more cost-effective than purchasing it in small containers. Plus, no need to buy extra flux or rosin, as it's already included in the core. Wide Range of Applications: This lead-free solder on a convenient extraction spool is perfect for numerous repairs. Ideal for soldering electrical wires or cables, repairing toys, headphones, TVs, speakers, microphones, motherboards, SMB components, and much more.