Material: This radiator cleaning brush is made of thick nylon bristles, mounted on a bendable galvanized steel wire rod moves through the narrow slots and picks up lint. Flexible: Unique foldable design can be arbitrarily bent, allowing it to clean from multiple angles and without dead ends, which helps to clean the radiator better and keep it clean and beautiful. Strong cleanliness: Using this long and flexible brush can effectively remove the dust hidden deep inside, and it easily absorbs fine dust. Necessity of cleaning: Dust removal reduces the mixing of hot air and dust particles, which helps to improve the efficiency of the radiator, and the potential risk of fire is effectively avoided. Application: Ideal for removing dust behind and between radiator panels, can also be used for sweeping chimneys and the end of drain pipes.