Color: as shown Material is copperSize: the diameter is approx. 7 cm, the error is approx. 1 cm. Extend the life of the soldering iron tip: brass tip cleaner is softer than the iron tip and harder than the oxide on the tip. This effectively reduces the accumulation of oxide and extends the life of the soldering iron tip. Work Efficiently The soldering tip cleaner does not need to use water to keep the soldering tips clean, so that the temperature of the tip is not reduced, so the soldering tip cleaner cleans better than conventional ones. Warning: Do not spray on your hands, as metal wire is springy, so wear out when replacing the metal wire, place the cleaner upright when opening.