Made of high-quality materials, and practical. Exquisite and delicate, highly matched with equipment. The motor back cover is used to connect the motor and the filter. The post filter is used to block fine particles and floating dust to avoid secondary air pollution. As part of daily maintenance, it can be easily removed and replaced. Configuration: For V7 V8 colour:+grey Material:ABS+PC Package Contents: 1 x pre-filter 1 x post filter 1 x Motor back cover Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.