Exquisite and delicate, perfectly matched with the equipment. The diameter of the roller brush is 45cm, which is only suitable for 4-prong inner fitting (not suitable for 3-prong head). Check carefully before purchasing, please don't buy the wrong product. Strong and durable, long service life. Easily remove dirt, dust and debris from corners and sides, especially from your hair and pet hair. Does not damage floors and furniture and ensures quiet operation. Package content: 1 brush roll