BISSELL Style 7/9/10 Replacement Belts, 2-pack Belt fits styles 7, 9, 10, 12, 14, 16 The drive belt is an important component of your vacuum that allows the brush roll to spin and help remove dirt and debris from your carpet. You should replace your belt if broken or worn. You should check your vacuum cleaner's rotating floor brush and drive belt regularly for wear or damage. If your vacuum is not cleaning as well as it had before or the brush roll has stopped turning, you may have to change the belt. To change the belt, please refer to your user guide for installation instructions.