Feature: Made of high quality material, durable Can be easily removed and replaced as part of normal maintenance. For the health of you and your family, and to take good care of your robot, it is recommended to choose high-quality products and replace the accessories to the cleaning effect. The parts have a longer life cycle and better cleaning effect, which protects the robot from excessive wear and reduces the service life. Vacuum Cleaner Parts Silver ion Module Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you!Physical twill random, Cannot be chosen the specific twill! Material: plastic colour: White Package Contents: 4 x Silver Ion Module 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.