❤ Effective filter dust, to prevent dust particles in the engine chamber and damage to the engine, to ensure the life of the vacuum cleaner. ❤ Capable of filtering harmful parasites that can cause respiratory irritation. ❤ Replace the filter regularly, it can effectively protect and extend the life of the engine. ❤ Powerful absorption effect to bring you a clean environment and fresh air without any allergic source. ❤ It is a good replacement for the Roidmi F8 portable vacuum cleaner core.