KESTER part 24-6040-0007 is a high-quality solder wire perfect for a variety of electrical and electronic soldering applications. This 1 lb spool features a Sn60Pb40 composition, with a 3.3% flux core for easy and effective soldering. The wire has a diameter of 0.40mm (0.015in), making it ideal for precise soldering tasks. Trust KESTER for reliable, consistent performance every time.