1. Filter: It is recommended to check whether filter is clogged or damaged every once in a while. If filter becomes dirty or clogged, it may affect vacuuming effect and needs to be cleaned or replaced in time. 2. Side brushes: Side brushes wear out during cleaning and may need to be replaced regularly. The exact frequency of replacement depends on frequency of use and cleaning environment. 3. Roller brush: The service life of roller brush also vary depending on usage. If roller brush becomes worn or has tangled hair, it may need to be cleaned or replaced. 4. Mops: How often you need to replace mops depends on frequency of use and cleaning needs. Generally speaking, it is recommended to clean mop regularly to maintain good cleaning results. If mop is worn or damaged, it needs to be replaced in time. Colour:As Shown Material:Plastic Package Contents: 1 pair * roller brush 4 * side brush 4 * vibration rag cloth 4 * turntable rag cloth 4 * filter 4 * dust bag Only above package content,