Lead-Free Solder Wire 3.0mm 450g Solid Core Sn/Cu 99.3/0.7 Heavy Duty

["🔧 HEAVY-DUTY 3.0 MM DIAMETER Extra-thick solder wire designed for large joints, high-mass metals, plumbing work, and industrial applications where standard thin solder is not effective. 🛡️ LEAD-FREE Sn99.3/Cu0.7 ALLOY Made from 99.3% tin and 0.7% copper for strong, durable, corrosion-resistant bonds while meeting modern environmental and safety standards. ⚙️ SOLID CORE — USE WITH EXTERNAL FLUX No internal flux allows full control over soldering performance. Ideal for professionals using specific flux types for copper, brass, steel, and other metals."]