Crazydeal Soldering Solder Iron Tip Cleaner Cleaning Copper Wire Ball Home Kitchen Clean Using refined copper material, tough, heat-resistant, corrosion resistant, is scrubbing pots, washing dishes, cleaning supplies paint cups and other practical purposes. Commonly used in home renovations and other cleaning purposes, no rust. Not the dregs. Curls, ball design, used to clean your hot solder iron tip. No water necessary.