BISSELL | Brush Roll CrossWave Cordless | 1613568Innovative microfiber and nylon brush scrubs to remove debris and minimizes annoying pet hair wrap. It can be used on sealed hard floors and area rugs. Easy to disassemble and replace as part of routine maintenance. Keep your vacuum robot running at great performance by changing the consumable brush replacement every 2~3 month, depending on your use frequency. Replacement for the old or damaged part of your machine.