Compatible Model: The replacement side brush is only compatible with iRobot Roomba 500 600 700 Series. The precise size makes it perfectly fit your devices | | High Performance: It can reach every corner and wall edge for all-round cleaning, capturing fine dust, dander, textiles or carpet fibers, etc | | Long Lasting: These 3 armed side brushes are made of high-quality nylon, PP, and TPE materials, which are soft, wear-resistant, and bendable | | Easy to Install: Turn the screwdriver counterclockwise to loosen and remove the old side brush. Locate the hexagonal hole, install the screw, and turn clockwise to tighten | | Warm Tips: Replace the side brushes every 1-2 months to maintain optimal cleaning performance, depending on the environment in which you clean the device | |