Set-Main brush roller filter dirt field water tank for xiaomi vacuum 2 roborock S50 S55 robotic vacuum cleaner substances Product Name: Vacuum cleaner equipment Adapted model:for xiaomi half roborock S50 S51 S55 We have quite a lot of a number of styles of suits that you could be buy in step together with your diverse needs. Recommendation: For the nice of the mechanical device and home air, the clear out is recommended to be replaced once each 1-2 months, and the foremost brush should be changed once every single 3 to four months.