Excellent and stable electrical properties make it very reliable and efficient. Exquisite and high-quality workmanship makes it anti-oxidant and have a good activity. Different specifications allow you to choose the most suitable one according to your needs. Less smoke and pollution make it not harmful to your health. Made of tin wire material, it is very durable to use. There are four specifications for you to choose from: 5g, 20g, 50g, 100g. It can be used for welding copper, nickel, zinc, lead, iron, stainless steel, etc. Item Name: Solder Wire Material: Tin Wire Flux Content: 1% Welding Current: 20A Product Tin Content: 63% Product Model: Sn63Pb37 Product Lead Content: 37% Drug Core Type: Rosin Core Product Type: Leaded Solder Wire Product Weight: 5g, 20g, 50g, 100g Working Temperature: 200 Degrees Celsius Product Melting Point: 183-245 Degrees Celsius Features: Anti-oxidation, Less Smoke, Low Temperature Size Details: 5g: 9cm x 1.7cm x 1.7cm/3.54" x 0.67" x 0.67" (Approx.) 20g: 4.4cm x 2.2cm x 2.2cm/1.73" x 0.87" x 0.87" (Approx.) 50g: 5.5cm x 2.9cm x 2.9cm/2.17" x 1.14" x 1.14" (Approx.) 100g: 5.5cm x 2.9cm x 2.9cm/2.17" x 1.14" x 1.14" (Approx.) Tin Wire Diameter: 0.08cm/0.03" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Solder Wire (5g/20g/50g/100g)