Made of high quality material, more durable.Exquisite and delicate, highly match with the equipment.As part of normal maintenance, it can be easily removed and replaced.It is recommended that you replace spare parts every 6 months depending on the frequency of use to keep the machine running at its best performance.For Roborock sweeper T7/T7S PULS/S7Material: plasticColor: as shownPackage Contents:2 x 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.