①. Made of quality materials, well-constructed, durable, and highly compatible with the equipment. ②. Clean accessories help maintain your home robot's optimal performance. As part of daily maintenance, the accessories are easy to remove and replace. Meanwhile, they reduce the spread of dust, pollen and other allergens into the air you breathe. ③. To achieve good cleaning and filtering results, the cleaning accessories are recommended to be replaced every 2-3 months depending on usage frequency. ④. The filter is designed to filter dust, dirt and other impurities inhaled by the sweeping robot, helping keep the robot clean and functioning normally. It also prevents dust and dirt from entering the motor and other components, contributing to extending the robot's service life. For Dreame D9 Max Gen 2 Colour: As Shown Material: plastic Package Contents: 1 x main brush 4 x side brush 4 x filter 4 x mop cloth Only the above package content is included; other products are not. Note: Light reflection and different displays may cause a slight color difference between the picture and the actual item. The measurement error allowed is +/- 1-3cm.