The VAKOOBA Pure Copper Round Bars are made from 99.9% pure copper, offering superior electrical and thermal conductivity, durability, and corrosion resistance. Each bar measures 4mm in diameter and 300mm in length, supplied as a set of 10 pieces for convenience. These solid round bars are ideal for electrical connections, grounding, bus bars, metal fabrication, and DIY applications. The smooth metallic surface allows for easy cutting, machining, and shaping, providing reliable performance for both industrial and hobbyist use.