The drive belt is a critical component of your vacuum that allows the brush roll to spin and help remove dirt and debris from carpets. Check drive belt regularly for wear or damage. Replacement belt Type 7, 9, 10, 12, 14, and 16. Maintain optimum vacuum performance by replacing your belt every 12 months. Compatible with: Bissell CleanView (3575, 3590, 8975, and 8990 series), CleanView II (20Q9, 3574 and 3576 series), CleanView Helix (21K3, 22CI, and 82H1), CleanView, Power Trak (3591, 3593, 3594, and 6590 series), CleanView Revolution (3595, 3596, and 6591 series), Momentum (82G7, 3910 and 6390 series), Pet Hair Eraser (3920 series), PowerClean (92L3), PowerForce and PowerForce Turbo (46E5, 71Y7, 3522, 3525, 6579, 6582-6585, 6594, and 6596 series), PowerGlide (3545 series), Powergroom (4104 series, Power Trak (6592 series), Power Trak Cyclonic (6390 series), Power Trak Velocity (6393 series), Total Floors Velocity (3990 and 6393 series), Velocity (3950 series) Bagged and Bagless models. 2 belts per package.