If there's something I don't like about these brushes, I have to solder a wire to the metal body. I was hoping it would have a protrusion for a connector but it didn't. Having said that, I still give it 5 stars because anyone who has the guts to open their vacuum motor will overcome this small flaw with no problem. I have my vacuum cleaner back and it would be a normal duty to buy a new machine, but with these brushes I have breathed new life into my tool.