Product DescriptionColor: bronzeQuantity: 9 piecesPackage content: side brush4+filter screen4+rolling brush*11. Compatibility: Suitable for iRobot Roomba S9 (9150) S9 and S9 Plus (9550) with Wi-Fi connection. 2.Easy to installSo you can start cleaning again as quickly as possible. Simply remove the old filter from the main brush and the side brush and replace them with these spare parts.3.Easy to clean:The filter can clean the dust generated by small dust and bacteria, and reduce secondary air pollution (for best results, the filter should be replaced every 2-3 months).