Suitable For smart sweeping robot: -RM72VR -RM96W -RM84V -RM52VR -RM94W -RM72VS -RM72VG and other modelsBristles symmetry and side brush bearings fit tightly are good for cleaning more effectively.Each come with 3 arms side brush.Function:By rotating soft brush, the wall and the corner of dust swept into the suction port, inhaled dust box for centralized storage.the side brush is consumable parts , before cleaning is recommended to check each side brush.the side bristles deformed into the warm water soak a few minutes, and then the bristles get straight, until dry and then you can use.Color:Black+Bluematerial: plasticSize: Side brush length 5cmPackage included: 4* Side BrushOnly the above package content, other products are not included.Note: Light 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.