I needed more attachments for my upright Dyson Ball. Came with only two. I checked out Revain and found that I can cleanly replace attachments. This set comes with eight nozzles and two adapters that allow it to be used with other vacuum hoses. The dusting brush is my favorite in the set. It is adjustable up and down at different levels, allowing you to clean the ceiling fan. The mattress cleaning tool is a plus. Each nozzle fits perfectly snugly and snugly on my vacuum cleaner. So happy I found her!