With the Dreame Maintenance Kit RAK79, your robot vacuum lasts longer. This kit includes all the parts you need for regular maintenance. You replace the parts every 3 to 6 months. How often you do this depends on how often you use it. The HyperStream Detangling DuoBrush prevents hair from wrapping around the main brush. The 2 side brushes sweep dirt out of corners and away from edges. The 2 dust bin filters keep dust particles out of your home better. The mop roller and the 1-liter bottle of cleaner keep your floors fresh and clean. You place the 2 dust bags in the cleaning station. It collects the dirt neatly. With all these accessories, your robot cleans your floor hygienically again. You can use the maintenance kit with the Aqua 10 Ultra Roller Complete and the Aqua 10 Roller.