(5) VacuumBelts fits for Kirby Upright Vacuum Cleaner Sentria I II Generation 3 4 5 6 Belt Included (5) Vacuum Belts Fits for the following Kirby Upright Vacuums: Heritage (all),Classic (all),Tradition (all),Legend (all),Generation 3, 4, 5, 6 Ultimate (G7),Diamond (G7D),Sentria (G10),Sentria II One of the quickest and least expensive ways to improve the performance of your vacuum cleaner is to replace your belts frequently. If your vacuum utilizes a flat or friction style belt, the belt will continually stretch over time. If you wait until your belt breaks before you replace it, you may notice a decrease in performance. Many people attribute this to a loss of suction; it is actually caused by the stretched belt being unable to spin your brush roll at optimal speed. Also, changing your belt will make your vacuum cleaner easier to push, because as the brush roll spins faster, it will aid you as you push it across your carpeting. This part is a top quality, generic aftermarket replacement part.Any reference to brand or model numbers is intended for identification purposes only. This product does not include any warranty from the manufacturer. if you have any questions,please feel free to contact us.