1. new, high-quality materials, well-made, , and highly matched with the equipment. 2. Clean accessories keep your home robot at its best performance. As part of daily maintenance, the accessories are easy to remove and replace. At the same time, reduce the infiltration of dust, pollen and other into the air you breathe. 3. In order to achieve the best cleaning and filtering effect, the cleaning accessories should be replaced every 2-3 months depending on the frequency of use. 4. The filter is used to filter the dust, dirt and other impurities sucked in by the sweeping robot to keep the robot clean and running normally. The filter also prevents dust and dirt from entering the motor and other parts of the robot, thereby extending the service life of the robot. For X-Pert 1.60/3.60 ZR005202 RH7233 RH7221 RH7237 TY6933 TY6935 TY7231 TY7233 Colour:As Shown Material:Plastic Package Contents: 2x filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.