Wire Sponge Ball for Soldering Iron Tip Cleaning Cleans your soldering iron tips without water! Made from coils of brass, which is softer than the tip plating yet harder than the oxidation that forms on the tip. To clean the tip, simply plunge (stab) the iron tip into the coils. The ideal alternative to a wet sponge.Compare to $9.47 for the "Brand Name" ball of brass!"shell" design keeps the solder from splattering. Will not reduce the tip temperature. A great alternative to the conventional damp sponge. May be used as a portable tool holder and cleaner. Compatible with Hakko Tip cleaners and brass replacement ball.