100% Made of high-quality materials, environmental friendly materials, soft and durable to use. All accessories are brand new . 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 ensure 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 will continuously release silver ions into the water, and the antibacterial rate is as high as 99.9%.As the cleaning progresses, the silver ions will 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 Roborock Series For Narwal Series For Ecovacs Deebot OZMO Series For Dreame Bot Series [Silver ion] Natural, non-toxic antibacterial agent, the antibacterial rate reaches 99%, and it can kill bacteria with a broad spectrum. Can effectively inhibit the growth of bacterial population [Copper ions] Non-toxic, long-lasting bactericidal ability, can absorb heavy metals and impurities in water, not affected by light and organic matter concentration [Zeolite] helps to soften hard water and reduce sedimentation; eliminates toxins, heavy metals, free radicals Colour:Gray Material:ABS Size:26x15x13MM Package Contents: 2 * Silver Ion Module 2 * Copper ions Module 2 * Zeolite 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.