Solder wick, also known as desoldering braid, is a tool used in electronics to remove excess solder from circuit boards. It consists of a thin, braided copper wire that absorbs solder when heated. When placed over the solder joint and heated with a soldering iron, the solder flows into the wick, allowing for clean removal. This tool is particularly useful for fixing mistakes or replacing components on a circuit board. It is often preferred for its ability to cleanly remove solder without damaging the surrounding components, making it a valuable item for hobbyists and professionals in the field of electronics.