5-Pack iRobot Roomba 585 6-Arm Side Brush - Replacement for iRobot Roomba Robotic Vacuum Parts Replacement iRobot Roomba 585 6-Arm Side Brush The Brush allows your Roomba to reach deeper into the carpet for a more thorough cleaning Replace side brush every 2 to 3 months for best performance Please check your Roomba to make sure you are purchasing the correct parts On Sale for a Limited Time!