Perfect Fit: The filter is fit for RV2310 Robot Vacuum Cleaner.Filter dust to reduce dust, pollen and other impurities from seeping into your breathing air.The filter can fine dust with a diameter of 0.3 Micrometres or more, effectively filter pet hair, dust, dander and other pollutants, promote fresh exhaust.It is best to replace the spare parts every 2 to 3 months to keep the machine running at performance.Package includes: 4 HEPA Filters. For RV2310 Robot Vacuum Cleaner.Please note:the physical slightly color difference or difference, does not affect the use, please do not mind, thank you!Colour:As ShownMaterial:PlasticPackage Contents:4 x HEPA FiltersOnly 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.