Applicable model: Fits for iRobot Roomba i7 i7+ i3 i3+ i4 i4+ i6 i6+ i8 i8+ j7 j7+ Plus E5 E6 E7 I & J & E Series Robot Vacuum Cleaner. (Please confirm the model of your vacuum cleaner before purchasing) Spare parts help the robot easily remove dust and debris in corners and edges. If the side brushes become bent due to shipping, restore them by simply soaking them in hot water. Clean the replacement parts regularly to improve suction power and performance, and extend the life of your robot vacuum cleaner. It is recommended to replace the side brushes and filters every 2-3 months, every 6 months replace the multi-surface rubber brushes, also depending on the frequency of use. Color: as shown Material: plastic Package contents: 2 x Dual multi-surface rubber brushes 8 x Edge cleaning brushes 8 x Hepa filters 8 x Bag Dust brush 1 x Screwdriver 1 x Cleaning brush Only the above package content, other products are not included. . The allowed measurement error is +/- 1-3cm.