When bristles are missing or worn from the brush bar they no longer make proper contact with floor surface reducing it's effectiveness. It is recommended to replace the brush bar in your Dyson DC15, DC21 or DC23 when required for best cleaning performance. Comes in two parts. Genuine Dyson part: 913102-01. Replaces part number 909592-05.
All Dyson DC15 vacuums
All Dyson DC21 vacuums
All Dyson DC23 vacuums using an electric powerhead