Made of high-quality materials, environmental friendly materials, soft and to use. All accessories are . 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 regularly 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. The slow-release silver ion module continuously release silver ions into the water, and the rate is as high as 99.9%1. As the cleaning progresses, the silver ions continue to be transferred to the ground and the sewage tank, making the whole house cleaning, water storage, mop washing and sewage recycling process more at ease. As part of normal maintenance, it can be easily removed and replaced Universal Applicable models: For Series For Series For OZMO Series For Bot Series size: 26 x 15 x 13MM Material: ABS colour: grey Package Contents: 20 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.