MATERIAL - The products are made of high-strength and environmentally friendly materials to optimal performance and a healthier .Helps clean the vacuum cleaner and makes your healthierReplacement Accessories for the original damaged, non-working, or missing oneCompatible with For W10/W10 Pro Vacuum Cleaner. As part of normal maintenance, it can be removed and replacedThe silver ions in the water tank of W10Pro are not included...Compatible with model: For W10/W10 Pro RobotColor: Transparent greyMaterial: ABSPackage Contents:1 x Sewage Water TankOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.