[Application]The Replacement Parts is apply for S8 Pro Ultra S8+ Robot Vacuum Cleaner, please kindly check your machine type before ordering. [Highly Efficient Filter ] The cleaning filter blocks 99.97% of pollen, dirt, dust, pet dander and other particles as small as 0.3 microns in size. For optimal performance, it's recommended to clean the filter replacements every few weeks and replaced every two months. [Maintenance] Keep your Robot running at by changing the the consumable replenishment kit 2-4 months, depending on your use frequency. Color: As shown Material: plastic Package Contents: 4*Filter Only the above package content, other products are not included. Note: Light reflection 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.