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