Compatibility very suitable after the engine and before the oil filter replacement kit. particles for the Dyson V7 and V8 cordless stick vacuum cleaners.Excellent quality; made of materials to high strength and environmentally friendly. It is very suitable to remove food, hair, pollen, dirt, dust and pets, ensuring there are no contaminants around your living space.Washable and Reusable - In order to improve the performance of our filter, we recommend rinsing the pre-filter with water. clean water at least once a month and let the filter air dry. air after cleaning. And it will be replaced all three to six months (3-6 months).Economical kit - you will get 2 pre-filters, 2 post-filters and 1 free cleaning brush. The high quality pre-filter and the HEPA post-filter to agrave; high efficiency can block fine particles, floating dust and most allergens, dust mites, pollen, etc. your needs - if you have any questions, please do not hesitate to contact us. Contact us. We strive to provide the highest quality products. and efficient customer service.