Spare parts set with 4 replacement filters suitable for Xiaomi Robot Vacuum Mop 2S/Mop P/Mop Pro/XMSTJQR2S/STYTJ02YM. These vacuum cleaner filters filter small particles and prevent them from dispersing into the air or damaging the internal parts of the vacuum cleaner. Clean as necessary (cleaning brush is included) and completely replace at least once a year. This HEPA filter has a precise fit and is easy to change.