Everything you need to keep your robot clean in one convenient kit. Compatible with all Roomba e and i series robots. Genuine parts made by iRobot < li>Material: Plastic Package Contents: Main Brush Accessories * 1 pair This iRobot accessory is only compatible with the Roomba e and i series, such as Roomba i7150. This pack contains two extractor brushes. These soft rubber brushes are in constant contact with your floor to ensure your robot vacuum works effectively on hard floors and carpets. The first brush is for thasto remove greasy dirthasThanks to the friction system, the second brush rotates in the opposite direction to project the dirt towards the suction. This set of two multi-surface rubber extractors for Roomba e and i series will allow you to properly maintain your robot vacuum over time.