Compatible Model: Fits iRobot Roomba i7 i7+ i3 i3+ i4 i4+ i6 i6+ i8 i8+ j7 j7+ Plus E5 E6 E7 I &amp; ; J &amp; amp; Robot vacuum cleaner E series. (Please confirm your vacuum cleaner model before purchasing) The spare parts help the robot to 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 warm 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 Double Multi-Surface Rubber Brushes 8 x Edge Cleaning Brushes 8 x Hepa Filter 8 x Bag Dust Brush 1 x Screwdriver 1 x Cleaning Brush Only the above package contents, other products are not included. . The allowed measurement error is +/- 1-3cm. < p>