10 Pack HEPA Filters for Xiaomi Roborock S6 S5 MAX S60 S65 S5 S50 S55 E25 E35 Vacuum Cleaner The filters can maintain the cleaning performance of the mop and reduce dust penetration. It is recommended to replace the spare parts every 2 to 3 months depending on the frequency of use to keep the machine in good condition Compatibility: for Xiaomi Roborock S6 S5 MAX S60 S65 S5 S50 S55 E25 E35 Package: 10 filters. The HEPA filter is washable