Yikebo(TM) Bristle Brush & Flexible Beater Brush & 6-Armed Side Brush and Screw & Filter & Cleaning tool Pack Replenishment Kit for iRobot Roomba 500 Series Red and Green Cleaning Heads Vacuum Cleaning Robots 6 reusable dust-reducing filters 2 Bristle Brushes 2 Flexible Beater Brushes 2 Side Brush with 2 Screws 1 Brush Cleaning tool