Smokelesstasteless non-toxicno pollutionno water necessary.Saves energy maintain temperature of the iron. It is easy to use and cleans the tip almost perfectly won't damage your soldering tips. - Used to clean your hot solder iron tip between uses - The tightly twisted ribbons of golden cleaning curls scrub the oxidation off of the tip of your solder iron without cooling off the tip like a wet sponge will - The curls capture and hold old and contaminated solder residues as it cleans it from the tip of your solder iron - Just insert the hot iron tip into the "golden curls" with a twisting motion and twist it back out repeat as necessary he tip of your solder iron will be bright shiny and ready for great soldering results