High Quality Material Our cleaning sponge is made of compressed wood pulp cotton. It has very good water absorption and compressibility. It has a high disposable use rate, more durable and longer life than other ordinary sponges. . Moderate Size When dry, the size of these sponges is 60 x 60mm, and the size is moderate, so they will have a wide range of uses. Couples their softness, they can clean large and small corners. They are easy to use and easy to store. . Features The sponge material is environmentally friendly and sulfur-free.When the soldering iron tip is inserted into the brass wire tip cleaner, it can thoroughly clean the tip, convenient and effective, improve work efficiency and quickly clean the oxide layer on the surface without damaging it. . Instructions For Use Moisten slightly before use, the sponge will expand to its maximum size on contact with liquid. These soldering iron sponges are ideal replacements for old sponges. . Scope of Application This blue soldering iron tip cleaning sponge is very suitable to be used as a car sponge, wooden board sponge, tile grouting or cleaning any surface, and can be used in the construction industry. welding, automobile factories, household equipment and other fields. .