75cm Material: This radiator cleaning brush is made of thick nylon bristles, mounted on a bendable galvanized steel wire rod moves through narrow slots and picks up lint. Flexible: Unique collapsible design can be arbitrarily folded, which allows 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 dust hidden deep inside, and it easily absorbs fine dust. Need for cleaning: Dust removal reduces the mixing of hot air and dust particles, which helps to improve the efficiency of the heater, 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. Note: The data are manual measurement, please allow a 1-3cm error, due to the differences between the light and the display, there will be a certain color difference, the specific received in kind prevail.