General description Replacement Parts Main Brush compatible with Roborock U10 Dyad Wet and Dry Vacuums Cleaner. Made of high-strength and environmentally friendly materials, these brushes are designed for easy installation and optimal performance. It is recommended to replace the brushes every 1-2 months to maintain cleaning efficiency. Technical specifications Color: as shown Material: plastic Package Contents: 3 x Rolling Brush, 1 x Cleaning Brush Measurement allowed error: +/- 1-3 cm