Material: Rear engine cover of our products with rear filter assembly made of high quality materials, more durable. Contains 1 rear engine cover and 1 rear filter. As part of normal maintenance, it can be easily removed and replaced. Rear Engine Cover: The rear engine cover is used to connect the engine and the filter. Rear Filter: The rear filter is used to block fine particles and floating dust to prevent secondary air pollution. Special Skills: Improves vacuum cleaner filtration and reduces noise. The rear filter is used to block fine particles and floating dust to avoid. Suitable For: Dyson v7 v8. Product Description Function: 1. Made of high quality material, durable and convenient to use. 2. The filter can collect dirt, dust, pet dander and other particles up to 0.3 m. 3. It is recommended to replace it every 9-12 months, or depending on your usage, to keep the device performing at its best. Specification: Material: ABS< /p> Colour: Purple, Black Size: 12.2 x 10.4 x 8.5 cm