Brass wire sponge removes excess solder and contaminants without cooling the tip, ensuring optimal heat transfer and preventing oxidation. Housed in a compact, stable silicone box with an integrated lid for easy storage and portability. Durable and reusable for long-term use. The iFixit Soldering Tip Cleaner is an essential tool designed to maintain your soldering iron tip's performance and longevity. Featuring a brass wire sponge housed in a convenient silicone box, this cleaner easily removes excess solder and contaminants, ensuring efficient heat transfer and preventing oxidation. Unlike traditional wet sponges, the brass cleaner doesnt cool the tip, allowing for uninterrupted, precise soldering.