The Coodss Motor Rear Cover and Filter Kit is designed for Dyson V7 and V8 vacuum cleaners. This kit includes a rear motor cover, a HEPA post-filter, and two pre-filters. The filters are highly efficient, ensuring optimal performance of your vacuum cleaner by capturing dust and germs effectively. The rear motor cover is easy to install by removing the old cover and replacing it with the new one. The pre-filters and post-filters should be replaced every 2-3 months depending on usage to maintain the vacuum's efficiency.