General description Replacement Parts Main Brush compatible with Dyson DC40 Vacuum Cleaner. This product is brand new and made of high-strength, environmentally friendly materials. It is easy to install and is recommended to be replaced every 1-2 months for optimal performance. Technical specifications Model Number: DY-923857-02 Part Type: Brushes Material: Plastic Allowed measurement error: +/- 1-3 cm Package Contents 1 x Rolling Brush 1 x Cleaning Brush Other information Note: Light reflection and different displays may cause the color of the item to differ slightly from the actual product.