Compatible with: accessories for iRobot Roomba vacuum cleaners, including i7, i7+, E5, E6, 800 and 900 series. Contents: Each package may contain a filter, side brush, rubber brush, filter cleaning brush, dust bag, round brush and basket. The exact number of items included is stated in the package title and image. Replacement: Replace brush and filter every two months to maintain the vacuum cleaner's performance. Please note: 1. Due to different lighting and screen settings, the product color may differ slightly from the picture. 2. Please allow a slight difference in dimensions due to manual measurements. [Friendly tips] Returns without reason cause unnecessary resource and energy consumption. Please contact our customer service if you experience any problems after receiving your order, and we will do our best to help you solve them. If you are still not satisfied, it is never too late to return after communication. Thanks again.