CompatibilityThis rolling brush is compatible with iRobot Roomba i6+ i7 i7+ i3 i3+ E5 E6 E7 Wi-Fi connected smart mapping robot vacuum cleaner. High performanceSnaps together for quick replacement and effortlessly. No tools required, easy to replace the main brush. This set works just as well as the originals, precise fit and easy installation. Multi-Surface Rubber BrushesThis is uniquely designed with rubber treads to contour to different floor surfaces, removing everything from small dust to large debris. MaintenanceKeep your robot running at peak performance by changing the consumable replacement kit every 2-3 months, depending on how often you use it. use. Value package2 sets of roller brushes. (Note: Some noise may be generated when using the rollers for the first time, but if you use them for a while, it will disappear.) Compatible models: This roller brush spare fits robotics for iRobot Roomba E series E5 (E5134) E6 (E6198) i3 i3+ i4 i4+ i6 i6+ i7(7150) i7 plus(7550) Package includes: 2 sets of Multi-Surface Dual Rubber Brushes. Use Suggestions: Please replace the brush and filter every 2 months to keep the vacuum working with high performance.