ApplicationSpare parts only apply for Roborock Q7 / Q7+ / Q7 Max/ Q7 Max+ Vacuum Cleaner, please kindly check your machine type before ordering.ManufacturingAll parts kit are not original, but our supplies are from the same OEM factory and use the same materials, process and present same performance.Main Brush & Side BrushReplacement main brush is made of high quality ABS rubber, snaps quickly and can be easily replaced without any tool. Soft silicon 5-arm side brush reaches deep into corners and edges to remove more dirt, dust and debris.Mop Pad & Hepa FilterMicrofiber mop with ultra strong cleaning ability can effectively clean your room. HEPA filter is made of high-strength environmental-friendly materials, which can block most of dust and dirt.We suggest the replacement period is 8-12 weeks depending on your cleaning frequency and circumstance.