Hongfa Replacement 5 Pcs Flexible Beater Brush for for iRobot Roomba 500 Series 510, 530, 535, 540, 550, 560, 570, 580 Vacuum Cleaner Parts with Red or Green Cleaning Head Module Compatible with IRobot Roomba 500 Series (510, 530, 535, 540, 550, 560, 570, 580) with green cleaning head modules Vacuum Cleaner Maintain cleaning performance and reduce battery drain by regularly replacing Roomba's flexible beater brush Keep your home clean by changing the Brushes frequently , once every month or two, depending on your usage. Tips: Before buying , please noted that these replacement attachment kits are not original product, they are replacement parts for Irobot Roomba Vacuum Cleaner . Replenishment with Protect Safeguard Box Includes : 5 Pcs Flexible Beater Brush (Roomba 510, 530, 535, 540, 550, 560, 570, 580 Series)