Durability: The high-standard material make this water tank to be durable.Compatibale model: Roborock S50 S51 S55 T60 T6 Vacuum / Suitable for Mi Vacuum partsThe replacement of the spare parts on time will help your robot maintain the good cleaning performance.Note: Please do not add the corrosive or soluble liquid, like laundry detergent into it when you use it to mop.Each set of spare parts is recommended to use for six months, and then replace the new part spare.Size: 31.5*12.4*2cm : transparent white + grayMaterial: ABS + clothPackage contents: 1* water tank2* rag12* filter the above package content, products are not included.Note: shooting 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.