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